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Unmanned aerial vehicle. An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs are a component of an unmanned aircraft system (UAS), which includes adding a ground-based controller and a system of communications with the UAV. The flight of UAVs may operate under remote control by a human operator, as remotely-piloted aircraft (RPA), or with various degrees of autonomy, such as autopilot assistance, up to fully autonomous aircraft that have no provision for human intervention.UAVs were originally developed through the twentieth century for military missions too "dull, dirty or dangerous.

Unmanned aerial vehicle. for humans, and by the twenty-first, they had become essential assets to most militaries. As control technologies improved and costs fell, their use expanded to many non-military applications. These include forest fire monitoring, aerial photography, product deliveries, agriculture, policing and surveillance, infrastructure inspections, entertainment, science, smuggling, and drone racing.## Terminology.Many terms are used for aircraft which fly without any persons on board:The term drone has been used from the early days of aviation, being applied to remotely-flown target aircraft used for practice firing of a battleship's guns, such as the 1920s Fairey Queen and 1930s de Havilland Queen Bee. Later.

Unmanned aerial vehicle. examples included the Airspeed Queen Wasp and Miles Queen Martinet, before ultimate replacement by the GAF Jindivik. The term remains in common use. In addition to the software, autonomous drones also employ a host of advanced technologies that allow them to carry out their missions without human intervention, such as cloud computing, computer vision, artificial intelligence, machine learning, deep learning, and thermal sensors. For recreational uses, an aerial photography drone (as opposed to a UAV) is an aircraft that has first-person video, autonomous capabilities, or both.An unmanned aerial vehicle (UAV) is defined as a "powered, aerial vehicle that does not.

Unmanned aerial vehicle. carry a human operator, uses aerodynamic forces to provide vehicle lift, can fly autonomously or be piloted remotely, can be expendable or recoverable, and can carry a lethal or nonlethal payload". UAV is a term that is commonly applied to military use cases. However missiles with warheads are not considered UAVs because the vehicle itself is a munition. Also, the relation of UAVs to remote controlled model aircraft is unclear, UAVs may or may not include remote-controlled model aircraft. Some jurisdictions base their definition on size or weight; however, the US FAA defines any uncrewed flying craft as a UAV.

Unmanned aerial vehicle. regardless of size. The term "unmanned aircraft system" (UAS) was adopted by the United States Department of Defense (DoD) and the United States Federal Aviation Administration (FAA) in 2005 according to their Unmanned Aircraft System Roadmap 2005–2030. The International Civil Aviation Organization (ICAO) and the British Civil Aviation Authority adopted this term, also used in the European Union's Single-European-Sky (SES) Air-Traffic-Management (ATM) Research (SESAR Joint Undertaking) roadmap for 2020. This term emphasizes the importance of elements other than the aircraft. It includes elements such as ground control stations, data links and other support equipment. A similar term is an "unmanned-aircraft.

Unmanned aerial vehicle. vehicle system" (UAVS), "remotely piloted aerial vehicle" (RPAV), "remotely piloted aircraft system" (RPAS). Many similar terms are in use. "Unoccupied" and "uninhabited" are occasionally used as alternatives to "unmanned". Under new regulations which came into effect 1 June 2019, the term RPAS (Remotely Piloted Aircraft System) has been adopted by the Canadian Government to mean "a set of configurable elements consisting of a remotely piloted aircraft, its control station, the command and control links and any other system elements required during flight operation".## Classification types.UAVs may be classified like any other aircraft, according to design configuration such as weight or.

Unmanned aerial vehicle. engine type, maximum flight altitude, degree of operational autonomy, operational role, etc. According to the United States Department of Defense, UAVs are classified into five categories below:Other classifications of UAVs include:## Range and endurance.There are usually five categories when UAVs are classified by range and endurance:## Size.There are usually four categories when UAVs are classified by size, with at least one of the dimensions (length or wingspan) meet the following respective limits:## Weight.Based on their weight, drones can be classified into five categories — nano (weighing up to 250 g), Micro air vehicles (MAV) (250 g – 2 kg), Miniature.

Unmanned aerial vehicle. UAV or small (SUAV) (2–25 kg), medium (25–150 kg), and large (over 150 kg).## Degree of autonomy.Drones could also be classified based on the degree of autonomy in their flight operations. ICAO classifies uncrewed aircraft as either remotely piloted aircraft or fully autonomous. Some UAVs offer intermediate degrees of autonomy. For example, a vehicle may be remotely piloted in most contexts but have an autonomous return-to-base operation. Some aircraft types may optionally fly manned or as UAVs, which may include manned aircraft transformed into uncrewed or Optionally Piloted UAVs (OPVs).## Altitude.Based on the altitude, the following UAV classifications have been.

Unmanned aerial vehicle. Carrier Guidance System (CACGS) for UAVs## Composite criteria.An example of classification based on the composite criteria is U.S. Military's unmanned aerial systems (UAS) classification of UAVs based on weight, maximum altitude and speed of the UAV component.## History.## Early drones.The earliest recorded use of an unmanned aerial vehicle for warfighting occurred in July 1849, with a balloon carrier (the precursor to the aircraft carrier) in the first offensive use of air power in naval aviation. Austrian forces besieging Venice attempted to launch some 200 incendiary balloons at the besieged city. The balloons were launched mainly from land; however, some were.

Unmanned aerial vehicle. also launched from the Austrian ship . At least one bomb fell in the city; however, due to the wind changing after launch, most of the balloons missed their target, and some drifted back over Austrian lines and the launching ship "Vulcano".The Spanish engineer Leonardo Torres y Quevedo introduced a radio-based control-system called the "Telekino" at the Paris Academy of Science in 1903 with the intention of testing an airship of his own design without risking human lives.Significant development of drones started in the 1900s, and originally focused on providing practice targets for training military personnel. The earliest attempt at.

Unmanned aerial vehicle. a powered UAV was A. M. Low's "Aerial Target" in 1916. Low confirmed that Geoffrey de Havilland's monoplane was the one that flew under control on 21 March 1917 using his radio system. Following this successful demonstration in the spring of 1917 Low was transferred to develop aircraft controlled fast motor launches D.C.B.s with the Royal Navy in 1918 intended to attack shipping and port installations and he also assisted Wing Commander Brock in preparations for the Zeebrugge Raid. Other British unmanned developments followed, leading to the fleet of over 400 de Havilland 82 Queen Bee aerial targets that went.

Unmanned aerial vehicle. in the late 1930s.## World War II.In 1940 Denny started the Radioplane Company and more models emerged during World War II used both to train antiaircraft gunners and to fly attack-missions. Nazi Germany produced and used various UAV aircraft during the war, like the Argus As 292 and the V-1 flying bomb with a jet engine.## Postwar period.After World War II development continued in vehicles such as the American JB-4 (using television/radio-command guidance), the Australian GAF Jindivik and Teledyne Ryan Firebee I of 1951, while companies like Beechcraft offered their Model 1001 for the U.S. Navy in 1955. Nevertheless, they.

Unmanned aerial vehicle. were little more than remote-controlled airplanes until the Vietnam War.In 1959 the U.S. Air Force, concerned about losing pilots over hostile territory, began planning for the use of uncrewed aircraft. Planning intensified after the Soviet Union shot down a U-2 in 1960. Within days, a highly-classified UAV program started under the code name of "Red Wagon". The August 1964 clash in the Tonkin Gulf between naval units of the U.S. and the North Vietnamese Navy initiated America's highly-classified UAVs (Ryan Model 147, Ryan AQM-91 Firefly, Lockheed D-21) into their first combat missions of the Vietnam War. When the Chinese government.

Unmanned aerial vehicle. showed photographs of downed U.S. UAVs via "Wide World Photos", the official U.S. response was "no comment".During the War of Attrition (1967–1970) in the Middle East, Israeli intelligence tested the first tactical UAVs installed with reconnaissance cameras, which successfully returned photos from across the Suez Canal. This was the first time that tactical UAVs that could be launched and landed on any short runway (unlike the heavier jet-based UAVs) were developed and tested in battle.In the 1973 Yom Kippur War, Israel used UAVs as decoys to spur opposing forces into wasting expensive anti-aircraft missiles. After the 1973 Yom Kippur war,.

Unmanned aerial vehicle. a few key people from the team that developed this early UAV joined a small startup company that aimed to develop UAVs into a commercial product, eventually purchased by Tadiran and leading to the development of the first Israeli UAV.In 1973 the U.S. military officially confirmed that they had been using UAVs in Southeast Asia (Vietnam). Over 5,000 U.S. airmen had been killed and over 1,000 more were missing or captured. The USAF 100th Strategic Reconnaissance Wing flew about 3,435 UAV missions during the war at a cost of about 554 UAVs lost to all causes. In the words of.

Unmanned aerial vehicle. USAF General George S. Brown, Commander, Air Force Systems Command, in 1972, "The only reason we need (UAVs) is that we don't want to needlessly expend the man in the cockpit." Later that year, General John C. Meyer, Commander in Chief, Strategic Air Command, stated, "we let the drone do the high-risk flying ... the loss rate is high, but we are willing to risk more of them ...they save lives!"During the 1973 Yom Kippur War, Soviet-supplied surface-to-air missile-batteries in Egypt and Syria caused heavy damage to Israeli fighter jets. As a result, Israel developed the IAI Scout as the.

Unmanned aerial vehicle. first UAV with real-time surveillance. The images and radar decoys provided by these UAVs helped Israel to completely neutralize the Syrian air defenses at the start of the 1982 Lebanon War, resulting in no pilots downed. In Israel in 1987, UAVs were first used as proof-of-concept of super-agility, post-stall controlled flight in combat-flight simulations that involved tailless, stealth-technology-based, three-dimensional thrust vectoring flight-control, and jet-steering.## Modern UAVs.With the maturing and miniaturization of applicable technologies in the 1980s and 1990s, interest in UAVs grew within the higher echelons of the U.S. military. In the 1990s, the U.S. DoD gave a contract to.

Unmanned aerial vehicle. AAI Corporation along with Israeli company Malat. The U.S. Navy bought the AAI Pioneer UAV that AAI and Malat developed jointly. Many of these UAVs saw service in the 1991 Gulf War. UAVs demonstrated the possibility of cheaper, more capable fighting-machines, deployable without risk to aircrews. Initial generations primarily involved surveillance aircraft, but some carried armaments, such as the General Atomics MQ-1 Predator, that launched AGM-114 Hellfire air-to-ground missiles.CAPECON, a European Union project to develop UAVs, ran from 1 May 2002 to 31 December 2005. the United States Air Force (USAF) employed 7,494 UAVs almost one in three USAF aircraft.

Unmanned aerial vehicle. The Central Intelligence Agency also operated UAVs. By 2013 at least 50 countries used UAVs. China, Iran, Israel, Pakistan, Turkey, and others designed and built their own varieties. The use of drones has continued to increase. Due to their wide proliferation, no comprehensive list of UAV systems exists.The development of smart technologies and improved electrical-power systems led to a parallel increase in the use of drones for consumer and general aviation activities. As of 2021, quadcopter drones exemplify the widespread popularity of hobby radio-controlled aircraft and toys, however the use of UAVs in commercial and general aviation is limited by.

Unmanned aerial vehicle. a lack of autonomy and by new regulatory environments which require line-of-sight contact with the pilot.In 2020 a Kargu 2 drone hunted down and attacked a human target in Libya, according to a report from the UN Security Council's Panel of Experts on Libya, published in March 2021. This may have been the first time an autonomous killer-robot armed with lethal weaponry attacked human beings.Superior drone technology played a role in Azerbaijan's successes in the 2020 Nagorno-Karabakh war against Armenia.UAVs are also used in NASA missions. The Dragonfly spacecraft is being developed, and is aiming to reach and examine Saturn's.

Unmanned aerial vehicle. moon Titan. Its primary goal is to roam around the surface, expanding the amount of area to be researched previously seen by Landers. As a UAV, Dragonfly allows examination of potentially diverse types of soil. The drone is set to launch in 2027, and is estimated to take a seven more years to reach the Saturnian system.## Design.Crewed and uncrewed aircraft of the same type generally have recognizably similar physical components. The main exceptions are the cockpit and environmental control system or life support systems. Some UAVs carry payloads (such as a camera) that weigh considerably less than an adult.

Unmanned aerial vehicle. human, and as a result, can be considerably smaller. Though they carry heavy payloads, weaponized military UAVs are lighter than their crewed counterparts with comparable armaments.Small civilian UAVs have no life-critical systems, and can thus be built out of lighter but less sturdy materials and shapes, and can use less robustly tested electronic control systems. For small UAVs, the quadcopter design has become popular, though this layout is rarely used for crewed aircraft. Miniaturization means that less-powerful propulsion technologies can be used that are not feasible for crewed aircraft, such as small electric motors and batteries.Control systems for UAVs are.

Unmanned aerial vehicle. often different than crewed craft. For remote human control, a camera and video link almost always replace the cockpit windows; radio-transmitted digital commands replace physical cockpit controls. Autopilot software is used on both crewed and uncrewed aircraft, with varying feature sets.## Aircraft configuration.The primary difference from manned aeroplanes is the lack of need for a cockpit area and its windows. However some types are adapted from piloted examples, or are designed for optional piloted or unmanned operational modes. Air safety is also less of a critical requirement for unmanned aircraft, allowing the designer greater freedom to experiment. These two factors.

Unmanned aerial vehicle. have led to a great variety of airframe and engine configurations in UAVs.For conventional flight the flying wing and blended wing body offer light weight combined with low drag and stealth, and are popular configurations. Larger types which carry a variable payload are more likely to feature a distinct fuselage with a tail for stability, control and trim, although the wing configurations in use vary widely.For vertical flight, the tailless quadcopter requires a relatively simple control system and is common for smaller UAVs. However the mechanism does not scale well to larger aircraft, which tend to use a conventional single.

Unmanned aerial vehicle. rotor with collective and cyclic pitch control, along with a stabilising tail rotor.## Propulsion.Traditional internal combustion and jet engines remain in use for drones requiring long range. However for shorter-range missions electric power has almost entirely taken over. The distance record for a UAV (built from balsa wood and mylar skin) across the North Atlantic Ocean is held by a gasoline model airplane or UAV. Manard Hill "in 2003 when one of his creations flew 1,882 miles across the Atlantic Ocean on less than a gallon of fuel" holds this record.Besides the traditional piston engine, the Wankel rotary engine is.

Unmanned aerial vehicle. used by some drones. This type offers high power output for lower weight, with quieter and more vibration-free running. Claims have also been made for improved reliability and greater range.Small drones mostly use lithium-polymer batteries (Li-Po), while some larger vehicles have adopted the a hydrogen fuel cell. The energy density of modern Li-Po batteries is far less than gasoline or hydrogen. However electric motors are cheaper, lighter and quieter. Complex multi-engine, multi-propeller installations are under development with the goal of improving aerodynamic and propulsive efficiency. For such complex power installations, Battery elimination circuitry (BEC) may be used to centralize power.

Unmanned aerial vehicle. distribution and minimize heating, under the control of a microcontroller unit (MCU).## Ornithopters – wing propulsion.Flapping-wing ornithopters, imitating birds or insects, have been flown as microUAVs. Their inherent stealth recommends them for spy missions.Sub-1g microUAVs inspired by flies, albeit using a power tether, have been able to "land" on vertical surfaces. Other projects mimic the flight of beetles and other insects.## Computer control systems.UAV computing capability followed the advances of computing technology, beginning with analog controls and evolving into microcontrollers, then system-on-a-chip (SOC) and single-board computers (SBC).System hardware for small UAVs is often called the flight controller (FC), flight controller.

Unmanned aerial vehicle. board (FCB) or autopilot.## Architecture.## Sensors.Position and movement sensors give information about the aircraft state. Exteroceptive sensors deal with external information like distance measurements, while exproprioceptive ones correlate internal and external states.Non-cooperative sensors are able to detect targets autonomously so they are used for separation assurance and collision avoidance.Degrees of freedom (DOF) refers to both the amount and quality of sensors on board: 6 DOF implies 3-axis gyroscopes and accelerometers (a typical inertial measurement unit IMU), 9 DOF refers to an IMU plus a compass, 10 DOF adds a barometer and 11 DOF usually adds a GPS receiver.## Actuators.UAV actuators.

Unmanned aerial vehicle. include digital electronic speed controllers (which control the RPM of the motors) linked to motors/engines and propellers, servomotors (for planes and helicopters mostly), weapons, payload actuators, LEDs and speakers.## Software.UAV software called the flight stack or autopilot. The purpose of the flight stack is to obtain data from sensors, control motors to ensure UAV stability, and facilitate ground control and mission planning communication.UAVs are real-time systems that require rapid response to changing sensor data. As a result, UAVs rely on single-board computers for their computational needs. Examples of such single-board computers include Raspberry Pis, Beagleboards, etc. shielded with NavIO, PXFMini,.

Unmanned aerial vehicle. etc. or designed from scratch such as NuttX, preemptive-RT Linux, Xenomai, Orocos-Robot Operating System or DDS-ROS 2.0.Civil-use open-source stacks include: Agilicious (also open-source hardware) ArduCopter CrazyFlie KKMultiCopter MultiWii BaseFlight (forked from MultiWii) CleanFlight (forked from BaseFlight) BetaFlight (forked from CleanFlight) iNav (forked from CleanFlight) RaceFlight (forked from CleanFlight) OpenPilot dRonin (forked from OpenPilot) LibrePilot (forked from OpenPilot) TauLabs (forked from OpenPilot) Paparazzi PX4 autopilot DroneCode (Umbrella organization managing PX4 within the Linux Foundation)Due to the open-source nature of UAV software, they can be customized to fit specific applications. For example, researchers from the Technical University of Košice have replaced the.

Unmanned aerial vehicle. default control algorithm of the PX4 autopilot. This flexibility and collaborative effort has led to a large number of different open-source stacks, some of which are forked from others, such as CleanFlight, which is forked from BaseFlight and from which three other stacks are forked from.## Loop principles.UAVs employ open-loop, closed-loop or hybrid control architectures. Open loop This type provides a positive control signal (faster, slower, left, right, up, down) without incorporating feedback from sensor data. Closed loop This type incorporates sensor feedback to adjust behavior (reduce speed to reflect tailwind, move to altitude 300 feet). The PID controller is.

Unmanned aerial vehicle. common. Sometimes, feedforward is employed, transferring the need to close the loop further.## Communications.UAVs use a radio for control and exchange of video and other data. Early UAVs had only narrowband uplink. Downlinks came later. These bi-directional narrowband radio links carried command and control (C&C) and telemetry data about the status of aircraft systems to the remote operator.In most modern UAV applications, video transmission is required. So instead of having separate links for C&C, telemetry and video traffic, a broadband link is used to carry all types of data. These broadband links can leverage quality of service techniques and carry.

Unmanned aerial vehicle. TCP/IP traffic that can be routed over the Internet.The radio signal from the operator side can be issued from either: Ground control – a human operating a radio transmitter/receiver, a smartphone, a tablet, a computer, or the original meaning of a military ground control station (GCS). Remote network system, such as satellite duplex data links for some military powers. Downstream digital video over mobile networks has also entered consumer markets, while direct UAV control uplink over the cellular mesh and LTE have been demonstrated and are in trials. Another aircraft, serving as a relay or mobile control station military manned-unmanned.

Unmanned aerial vehicle. teaming (MUM-T).Modern networking standards have explicitly considered drones and therefore include optimizations. The 5G standard has mandated reduced user plane latency to 1ms while using ultra-reliable and low-latency communications.## Autonomy.The level of autonomy in UAVs varies widely. UAV manufacturers often build in specific autonomous operations, such as: Self-level: attitude stabilization on the pitch and roll axes. Altitude hold: The aircraft maintains its altitude using barometric pressure and/or GPS data. Hover/position hold: Keep level pitch and roll, stable yaw heading and altitude while maintaining position using GNSS or inertial sensors. Headless mode: Pitch control relative to the position of the pilot.

Unmanned aerial vehicle. Performance considerations.## Flight envelope.UAVs can be programmed to perform aggressive maneuvers or landing/perching on inclined surfaces, and then to climb toward better communication spots. Some UAVs can control flight with varying flight modelisation, such as VTOL designs.UAVs can also implement perching on a flat vertical surface.## Endurance.UAV endurance is not constrained by the physiological capabilities of a human pilot.Because of their small size, low weight, low vibration and high power to weight ratio, Wankel rotary engines are used in many large UAVs. Their engine rotors cannot seize; the engine is not susceptible to shock-cooling during descent and it does not.

Unmanned aerial vehicle. require an enriched fuel mixture for cooling at high power. These attributes reduce fuel usage, increasing range or payload.Proper drone cooling is essential for long-term drone endurance. Overheating and subsequent engine failure is the most common cause of drone failure.Hydrogen fuel cells, using hydrogen power, may be able to extend the endurance of small UAVs, up to several hours.Micro air vehicles endurance is so far best achieved with flapping-wing UAVs, followed by planes and multirotors standing last, due to lower Reynolds number.Solar-electric UAVs, a concept originally championed by the AstroFlight Sunrise in 1974, have achieved flight times of several weeks.Solar-powered.

Unmanned aerial vehicle. atmospheric satellites ("atmosats") designed for operating at altitudes exceeding 20 km (12 miles, or 60,000 feet) for as long as five years could potentially perform duties more economically and with more versatility than low Earth orbit satellites. Likely applications include weather monitoring, disaster recovery, Earth imaging and communications.Electric UAVs powered by microwave power transmission or laser power beaming are other potential endurance solutions.Another application for a high endurance UAV would be to "stare" at a battlefield for a long interval (ARGUS-IS, Gorgon Stare, Integrated Sensor Is Structure) to record events that could then be played backwards to track battlefield activities.##.

Unmanned aerial vehicle. Reliability.Reliability improvements target all aspects of UAV systems, using resilience engineering and fault tolerance techniques.Individual reliability covers robustness of flight controllers, to ensure safety without excessive redundancy to minimize cost and weight. Besides, dynamic assessment of flight envelope allows damage-resilient UAVs, using non-linear analysis with ad hoc designed loops or neural networks. UAV software liability is bending toward the design and certifications of crewed avionics software.Swarm resilience involves maintaining operational capabilities and reconfiguring tasks given unit failures.## Applications.In recent years, autonomous drones have begun to transform various application areas as they can fly beyond visual line of sight (BVLOS) while.

Unmanned aerial vehicle. maximizing production, reducing costs and risks, ensuring site safety, security and regulatory compliance, and protecting the human workforce in times of a pandemic. They can also be used for consumer-related missions like package delivery, as demonstrated by Amazon Prime Air, and critical deliveries of health supplies.There are numerous civilian, commercial, military, and aerospace applications for UAVs. These include:General: Recreation, Disaster relief, archeology, conservation of biodiversity and habitat, law enforcement, crime, and terrorism. Commercial: Aerial surveillance, filmmaking, journalism, scientific research, surveying, cargo transport, mining, manufacturing, Forestry, solar farming, thermal energy, ports and agriculture.## Warfare.With extensive cost reductions and advancements in the.

Unmanned aerial vehicle. UAVs technology, the defense forces around the globe are increasingly using these for various applications such as surveillance, logistics, communication, attack and combat.As of 2020, seventeen countries have armed UAVs, and more than 100 countries use UAVs in a military capacity. The global military UAV market is dominated by companies based in the United States, Turkey, China, Israel and Iran. By sale numbers, the US held over 60% military-market share in 2017. Top military UAV manufactures are including General Atomics, Lockheed Martin, Northrop Grumman, Boeing, Baykar, TAI, IAIO, CASC and CAIG. China has established and expanded its presence in military.

Unmanned aerial vehicle. UAV market since 2010. Turkey also established and expanded its presence in military UAV market.Of the 18 countries that are known to have received military drones between 2010 to 2019, the top 12 all purchased their drones from China. According to a report of 2015, Israeli companies mainly focus on small surveillance UAV systems and by quantity of drones, Israel exported 60.7% (2014) of UAV on the market while the United States export 23.9% (2014). Between 2010 and 2014, there were 439 drones exchanged compared to 322 in the five years previous to that, among these only small fraction of.

Unmanned aerial vehicle. overall trade – just 11 (2.5%) of the 439 are armed drones. The US alone operated over 9,000 military UAVs in 2014; among them more than 7000 are RQ-11 Raven miniature UAVs. General Atomics is the dominant manufacturer with the Global Hawk and Predator/Mariner systems product-line.For intelligence and reconnaissance missions, the inherent stealth of micro UAV flapping-wing ornithopters, imitating birds or insects, offers potential for covert surveillance and makes them difficult targets to bring down.UAVs are used for reconnaissance, attack, demining, and target practice.## Civil.The civilian (commercial and general) drone market is dominated by Chinese companies. Chinese drone manufacturer DJI.

Unmanned aerial vehicle. alone had 74% of the civil market share in 2018, with no other company accounting for more than 5%, and with $11 billion forecast global sales in 2020. Following increased scrutiny of its activities, the US Interior Department grounded its fleet of DJI drones in 2020, while the Justice Department prohibited the use of federal funds for the purchase of DJI and other foreign made UAVs. DJI is followed by Chinese company Yuneec, US company 3D Robotics and French company Parrot with a significant gap in market share. As of May 2021, 873,576 UAVs have been registered with the US.

Unmanned aerial vehicle. FAA, of which 42% are categorized as commercial drones and 58% as recreational drones. 2018 NPD point to consumers increasingly purchasing drones with more advanced features with 33 percent growth in both the $500+ and $1000+ market segments.The civil UAV market is relatively new compared to the military one. Companies are emerging in both developed and developing nations at the same time. Many early stage startups have received support and funding from investors as is the case in the United States and by government agencies as is the case in India. Some universities offer research and training programs or degrees.

Unmanned aerial vehicle. Private entities also provide online and in-person training programs for both recreational and commercial UAV use.Consumer drones are also widely used by military organizations worldwide because of the cost-effective nature of consumer product. In 2018, Israeli military started to use DJI Mavic and Matrice series of UAV for light reconnaissance mission since the civil drones are easier to use and have higher reliability. DJI drones is also the most widely used commercial unmanned aerial system that the US Army has employed. DJI surveillance drones have also been used by Chinese police in Xinjiang since 2017.The global UAV market will reach.

Unmanned aerial vehicle. US$21.47 billion, with the Indian market touching the US$885.7 million mark, by 2021.Lighted drones are beginning to be used in nighttime displays for artistic and advertising purposes.## Aerial photography.Drones are ideally suited to capturing aerial shots in photography and cinematography, and are widely used for this purpose. Small drones avoid the need for precise coordination between pilot and cameraman, with the same person taking on both roles. However, big drones with professional cine cameras, there is usually a drone pilot and a camera operator who controls camera angle and lens. For example, the AERIGON cinema drone which is used in.

Unmanned aerial vehicle. film production in big blockbuster movies is operated by 2 people. Drones provide access to dangerous, remote or otherwise inaccessible sites.## Agriculture and forestry.As global demand for food production grows exponentially, resources are depleted, farmland is reduced, and agricultural labor is increasingly in short supply, there is an urgent need for more convenient and smarter agricultural solutions than traditional methods, and the agricultural drone and robotics industry is expected to make progress. Agricultural drones have been used in areas such as Africa to help build sustainable agriculture.The use of UAVs is also being investigated to help detect and fight wildfires,.

Unmanned aerial vehicle. whether through observation or launching pyrotechnic devices to start backfires.## Law enforcement.Police can use drones for applications such as search and rescue and traffic monitoring.## Safety and security.## Threats.## Nuisance.UAVs can threaten airspace security in numerous ways, including unintentional collisions or other interference with other aircraft, deliberate attacks or by distracting pilots or flight controllers. The first incident of a drone-airplane collision occurred in mid-October 2017 in Quebec City, Canada. The first recorded instance of a drone collision with a hot air balloon occurred on 10 August 2018 in Driggs, Idaho, United States; although there was no significant damage to.

Unmanned aerial vehicle. the balloon nor any injuries to its 3 occupants, the balloon pilot reported the incident to the National Transportation Safety Board, stating that "I hope this incident helps create a conversation of respect for nature, the airspace, and rules and regulations". Unauthorized UAV flights into or near major airports have prompted extended shutdowns of commercial flights.Drones caused significant disruption at Gatwick Airport during December 2018, needing the deployment of the British Army.In the United States, flying close to a wildfire is punishable by a maximum $25,000 fine. Nonetheless, in 2014 and 2015, firefighting air support in California was hindered on.

Unmanned aerial vehicle. several occasions, including at the Lake Fire and the North Fire. In response, California legislators introduced a bill that would allow firefighters to disable UAVs which invaded restricted airspace. The FAA later required registration of most UAVs.## Security vulnerabilities.By 2017, drones were being used to drop contraband into prisons.The interest in UAVs cyber security has been raised greatly after the Predator UAV video stream hijacking incident in 2009, where Islamic militants used cheap, off-the-shelf equipment to stream video feeds from a UAV. Another risk is the possibility of hijacking or jamming a UAV in flight. Several security researchers have made.

Unmanned aerial vehicle. public some vulnerabilities in commercial UAVs, in some cases even providing full source code or tools to reproduce their attacks. At a workshop on UAVs and privacy in October 2016, researchers from the Federal Trade Commission showed they were able to hack into three different consumer quadcopters and noted that UAV manufacturers can make their UAVs more secure by the basic security measures of encrypting the Wi-Fi signal and adding password protection.## Aggression.UAVs could be loaded with dangerous payloads, and crashed into vulnerable targets. Payloads could include explosives, chemical, radiological or biological hazards. UAVs with generally non-lethal payloads could possibly.

Unmanned aerial vehicle. be hacked and put to malicious purposes. Anti-UAV systems are being developed by states to counter this threat. This is, however, proving difficult. As Dr J. Rogers stated in an interview to A&T "There is a big debate out there at the moment about what the best way is to counter these small UAVs, whether they are used by hobbyists causing a bit of a nuisance or in a more sinister manner by a terrorist actor".## Countermeasures.## Counter unmanned air system.The malicious use of UAVs has led to the development of counter unmanned air system (C-UAS) technologies. Automatic tracking and.

Unmanned aerial vehicle. detection of UAVs from commercial cameras have become accurate thanks to the development of deep learning based machine learning algorithms. It is also possible to automatically identify UAVs across different cameras with different view points and hardware specification with re-identification methods. Commercial solutions such as the Aaronia AARTOS have been installed on major international airports. Anti-aircraft missile systems such as the Iron Dome are also being enhanced with C-UAS technologies. Utilising a smart UAV swarm to counter one or more hostile UAVs is also proposed.## Regulation.Regulatory bodies around the world are developing unmanned aircraft system traffic management solutions to better.

Unmanned aerial vehicle. integrate UAVs into airspace.The use of unmanned aerial vehicles is becoming increasingly regulated by the civil aviation authorities of individual countries. Regulatory regimes can differ significantly according to drone size and use. The International Civil Aviation Organization (ICAO) began exploring the use of drone technology as far back as 2005, which resulted in a 2011 report. France was among the first countries to set a national framework based on this report and larger aviation bodies such as the FAA and the EASA quickly followed suit. In 2021, the FAA published a rule requiring all commercially-used UAVs and all UAVs regardless.

Unmanned aerial vehicle. of intent weighing 250g or more to participate in Remote ID, which makes drone locations, controller locations, and other information public from takeoff to shutdown; this rule has since been challenged in the pending federal lawsuit "RaceDayQuads v. FAA".## Export controls.The export of UAVs or technology capable of carrying a 500 kg payload at least 300 km is restricted in many countries by the Missile Technology Control Regime. List of unmanned aerial vehicles Delivery drone Drone in a Box International Aerial Robotics Competition List of films featuring drones Micromechanical Flying Insect ParcAberporth Quadcopter Radio-controlled aircraft Satellite Sentinel Project Tactical Control.

Unmanned aerial vehicle. System UAV ground control station Unmanned underwater vehicleAxe, David. "Drone War Vietnam." Pen & Sword, Military. Great Britain. (2021). ISBN 978 1 52677 026 4 Hill, J., & Rogers, A. (2014). "". "Vancouver Island University Arts & Humanities Colloquium Series". Rogers, A., & Hill, J. (2014). "Unmanned: Drone warfare and global security". Between the Lines. How Intelligent Drones Are Shaping the Future of Warfare, "Rolling Stone Magazine.


Question: What is the conservation status of this animal? (The status is assigned by the international union for conservation of nature. Choose one among Endangered,Least Concern,Critically Endangered,extinct species,extinct in the wild,Vulnerable,Near Threatened,Data Deficient).

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Sea otter. bites, raising concerns that the population had reached a plateau. However, the population increased markedly from 2015 to 2016, with the United States Geological Survey (USGS) California sea otter survey 3-year average reaching 3,272 in 2016, the first time it exceeded the threshold for delisting from the Endangered Species Act (ESA). If populations continued to grow and ESA delisting occurred, southern sea otters would still be fully protected by state regulations and the Marine Mammal Protection Act, which set higher thresholds for protection, at approximately 8,400 individuals. However, ESA delisting seems unlikely due to a precipitous population decline recorded in.


Question: Which significant event was held in this building?

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Lenbachhaus. The Lenbachhaus () is a building housing an art museum in Munich's "Kunstareal".## The building.The Lenbachhaus was built as a Florentine-style villa for the painter Franz von Lenbach between 1887 and 1891 by Gabriel von Seidl and was expanded 1927–1929 by Hans Grässel and again 1969–1972 by Heinrich Volbehr and Rudolf Thönnessen. Some of the rooms have kept their original design.The city of Munich acquired the building in 1924 and opened a museum there in 1929. The latest wing was closed to the public in 2009 to allow the expansion and restoration of the Lenbachhaus by Norman Foster; the 1972.


Question: What is this plant named after?

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Allamanda. Allamanda is a genus of flowering plants in the family Apocynaceae. They are native to the Americas, where they are distributed from Mexico to Argentina. Some species are familiar as ornamental plants cultivated for their large, colorful flowers. Most species produce yellow flowers; "A. blanchetii" bears pink flowers. The genus name "Allamanda" honors the Swiss botanist and physician Frédéric-Louis Allamand (1736–1809). It is the official flower of Kuching North City Hall.## Description.Plants of the genus are evergreen trees, shrubs, or vines. They contain a white latex. The leaves are opposite or arranged in whorls of up to 5. The blades.


Question: What is the closest upper taxonomy of this plant?

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Cecropia. is controversial; in the past, it has been placed in the Cecropiaceae, Moraceae (the mulberry family), or Urticaceae (the nettle family). The modern Angiosperm Phylogeny Group system places the "cecropiacean" group in the Urticaceae.The genus is native to the American tropics, where it is one of the most recognizable components of the rainforest. The genus is named after Cecrops I, the mythical first king of Athens. Common local names include yarumo or yagrumo, or more specifically "yagrumo hembra" ("female "yagrumo"") to distinguish them from the similar-looking but unrelated "Schefflera" (which are called "yagrumo macho", "male "yagrumo""). In English, these trees.

Cecropia. Magnoliopsida – dicotyledonsSubclass: HamamelididaeOrder: UrticalesFamily: Cecropiaceae – "Cecropia" familyGenus: "Cecropia" Loefl. - pumpwood## Classification 2.This version of the classification system is considered the newer version and more widely accepted.Kingdom: Plantae – plantsSubkingdom: Tracheobionta – vascular plantsSuperdivision: Spermatophyta – seed plantsDivision: AngiospermaeClass: EudicotyledoneaeUnranked clade: RosidaeOrder: RosalesFamily: UrticaceaeGenus: "Cecropia" Loefl. –pumpwood## Taxonomic history."Cecropia" was first recognized and accounted for by Marcgrave (1648) and Piso (1658), the latter including an illustration with characteristic features. Loefling (1758) coined the generic name "Cecropia". In 1759, Linnaeus described "Cecropia peltata" which he applied to many species. Willdenow (1806) created "C. palmate", which was also applied to.

Cecropia. in the Urticales and Moraceae (Concephaleideae) because of its woody bark. Later based on the floral characters, most notably the basal ovule and gynoecium, which appears to be formed from a single carpel, Thorne (1976) moved it to the Malvanae- Urticales, family Urticaceae. Berg (1978), however, placed it in its own family Cercropiaceae. When phylogenetic data became available, "Cecropia" was then moved back into the Urticaceae.## Description.The genus is easily identified by its large, circular, palmately lobed leaves, about 30–40 cm in diameter and deeply divided into 7–11 lobes. The trees consist of very few branches, usually with candelabrum-like branching.

Cecropia. Borntraeger, Berlin Frisch, J.D. & Frisch, C.D. - "Aves Brasileiras", 3rd. edition, S.Paulo, 2005, Lok, A. F., Chong, K.Y, Nghiem, T. P, and H. T. Tan. “The Distribution and Ecology of Cecropia Species (Urticaceae) in Singapore” Department of Biological Sciences, National University of Singapore. Nature in Singapore 2010 pages 199-200. Print. Longino, John T. "The Cecropia-Azteca association in Costa Rica." Olympia, WA: The Evergreen State College, 2005. Print. Longino, John T. "Cecropia of Costa Rica." Academic Program Pages at Evergreen. N.p., n.d. Web. 4 Nov. 2011. <http://academic.evergreen.edu/projects/ants/antplants/CECROPIA/Cecropia.html>. Judd, et al. Plant systematics. 2. ed. Sunderland: Sinauer Associates, 2002. Print. (2007):.


Question: Which geographic area is this plant found?

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Jujube. more likely introduced there. The plant in Arabic and Persian is known as "Enab (عناب)", and is known as the "hinap" or "finab" in the eastern part of Bulgaria. It grows wild but is also a garden shrub, kept for its fruit. The fruit is picked in the autumn.The tree tolerates a wide range of temperatures and rainfall, though it requires hot summers and sufficient water for acceptable fruiting. Unlike most of the other species in the genus, it tolerates fairly cold winters, surviving temperatures down to about −15 (°C), and the tree is, for instance, commonly cultivated in Beijing.


Question: What has this village crossed over?

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Anderton Boat Lift. The Anderton Boat Lift is a two caisson lift lock near the village of Anderton, Cheshire, in North West England. It provides a 50 (ft) vertical link between two navigable waterways: the River Weaver and the Trent and Mersey Canal. The structure is designated as a scheduled monument, and is included in the National Heritage List for England; it is also known as one of the Seven Wonders of the Waterways.Built in 1875, the boat lift was in use for over 100 years until it was closed in 1983 due to corrosion. Restoration started in 2001 and the boat lift.

Anderton Boat Lift. was re-opened in 2002. The lift and associated visitor centre and exhibition are operated by the Canal & River Trust. It is one of only two working boat lifts in the United Kingdom; the other is the Falkirk Wheel in Scotland.## Economic background.Salt has been extracted from rock salt beds underneath the Cheshire Plain since Roman times. By the end of the 17th century a major salt mining industry had developed around the Cheshire "salt towns" of Northwich, Middlewich, Nantwich and Winsford.Completion of the River Weaver Navigation in 1734 provided a navigable route for transporting salt from Winsford, through Northwich,.

Anderton Boat Lift. to Frodsham, where the Weaver joins the River Mersey. In 1759 the second Weaver Navigation Act appointed the Trustees of the Weaver Navigation and gave them responsibility for maintaining and operating the route. The opening of the Trent and Mersey Canal in 1777 provided a second route close to the Weaver Navigation for part of its length, but extended further south to the coal mining and pottery industries around Stoke-on-Trent.Rather than competing with each other the owners of the two waterways decided it would be more profitable to work together. In 1793 a basin was excavated on the north bank.

Anderton Boat Lift. owners of the Trent and Mersey Canal, to ask for a contribution towards the cost. When this approach was unsuccessful the Trustees decided to fund the project themselves.The Trustees asked their Chief Engineer, Edward Leader Williams, to draw up plans for a boat lift. He settled on a design involving a pair of water-filled caissons that would counterbalance one another and require relatively little power to lift boats up and down. A similar boat lift on the Grand Western Canal, completed in 1835, used chains to connect the caissons via an overhead balance wheel. It had a solid masonry superstructure.

Anderton Boat Lift. in normal operation.## Construction.In October 1871 the Weaver Navigation Trustees held a special general meeting which resolved "to consider the desirability of constructing a lift with basins and all other requisite works for the interchange of traffic between the River Weaver and the North Staffordshire Canal at Anderton and of applying to Parliament for an Act to authorise the construction of such works."In July 1872 Royal Assent was granted for the Weaver Navigation 1872 Act, which authorised the construction of the boat lift. The contract for its construction was awarded to Emmerson, Murgatroyd & Co. of Stockport and Liverpool. Work.

Anderton Boat Lift. launching a restoration bid. It was originally intended to restore the lift to electrical operation but after consultation with English Heritage, in 1997 it was decided to restore the lift to hydraulic operation using hydraulic oil.To raise the £7 million restoration cost, a partnership was forged between the Waterways Trust, the Inland Waterways Association, the Anderton Boat Lift Trust, the Friends of Anderton Boat Lift, the Association of Waterways Cruising Clubs, British Waterways and the Trent and Mersey Canal Society. Heritage Lottery Funding contributed £3.3 million, and more than 2,000 individuals contributed to the scheme, raising a further £430,000.Restoration commenced.


Question: Which diocese does this building belong to?

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Sacred Heart Cathedral (Guangzhou). the clock tower was ordered from a Chinese clock factory.## Mass times.Weekdays: 06:45 (Cantonese)Saturday: 06:45 (Cantonese), 16:00 (Korean), 19:30 (Mandarin)Sunday: 07:00 (Cantonese), 08:30 (Cantonese), 10:30 (Mandarin), 15:30 (English) Christianity & Catholicism in China Roman Catholic Archdiocese of Guangzhou List of Catholic cathedrals in China.


Question: What is the closest upper taxonomy of this bird?

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Eurasian teal. The Eurasian teal (Anas crecca), common teal, or Eurasian green-winged teal is a common and widespread duck which breeds in temperate Eurosiberia and migrates south in winter. The Eurasian teal is often called simply the teal due to being the only one of these small dabbling ducks in much of its range. The bird gives its name to the blue-green colour teal.It is a highly gregarious duck outside the breeding season and can form large flocks. It is commonly found in sheltered wetlands and feeds on seeds and aquatic invertebrates. The North American green-winged teal ("A. carolinensis") was formerly (and.

Eurasian teal. sometimes is still) considered a subspecies of "A. crecca".## Taxonomy.The Eurasian teal belongs to the "true" teals, a group of small "Anas" dabbling ducks closely related to the mallard ("A. platyrhynchos") and its relatives; that latter group in fact seems to have evolved from a true teal. It forms a superspecies with the green-winged teal and the speckled teal ("A. flavirostris"). A proposed subspecies, "A. c. nimia" of the Aleutian Islands, differs only in slightly larger size; it is probably not distinct.Whether the Eurasian and green-winged teals are to be treated as one or two species is still being reviewed.

Eurasian teal. by the AOU, while the IUCN and BirdLife International separate them nowadays. Despite the almost identical and highly apomorphic nuptial plumage of their males, which continues to puzzle scientists, they seem well distinct species, as indicated by a wealth of behavioural, morphological and molecular data.The Eurasian teal was first scientifically named by Carl Linnaeus in his 1758 edition of "Systema naturae". His Latin description reads: "[Anas] macula alarum viridi, linea alba supra infraque oculos" – "a duck with green speculum, a white line above and below the eyes" – and his primary reference was the bird's description in his earlier.

Eurasian teal. work "Fauna Svecica". In fact, the description he used in "Systema Naturae" was the name under which the bird went in the "Fauna Svecica", demonstrating the value of his new binomial nomenclature by compressing the long-winded names formerly used in biological classification into much simpler scientific names like "Anas crecca". Linnaeus also noted in his description that earlier authors had already written about the Eurasan teal at length: Conrad Gessner had described it in the "Historiae animalium" as the "anas parva" ("small duck") among his "querquedulae" ("teals"); Ulisse Aldrovandi had called it "phascade" or "querquedula minor" ("lesser teal"), and was.

Eurasian teal. duly referenced by Francis Willughby who named the species "querquedula secunda Aldrovandi" ("the second teal of Aldrovandi"). John Ray may be credited with formally introducing the name "common teal", while Eleazar Albin called it simply "the teal". As regards the type locality Linnaeus simply remarked that it inhabits freshwater ecosystems in Europe.The scientific name is from Latin "Anas", "duck" and "kricka", the Swedish name for this species. The specific name of Linnaeus is onomatopoetic, referring to the male's characteristic call which was already discussed by Linnaeus' sources. The scientific name of the Eurasian teal—unchanged since Linnaeus' time— therefore translates as.


Question: What is the weight of a male of this bird in gram?

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Kea. the forests of New Zealand five million years ago. Their closest relative is the flightless kakapo ("Strigops habroptilus"). Together, they form the parrot superfamily Strigopoidea, an ancient group that split off from all other Psittacidae before their radiation.## Description.The kea is a large parrot measuring 46 to 50 (cm) in total length, with some specimens possibly reaching 55 (cm). Adult kea weigh between 750 and 1000 (g), with males averaging 956 (g) and females averaging 779 (g). One source listed the mean adult weight as 922 (g) It has mostly olive-green plumage with a grey beak having a long, narrow,.


Question: What is the closest upper taxonomy of this animal?

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Foothill yellow-legged frog. The foothill yellow-legged frog ("Rana boylii") is a small-sized 3.72 - 8.2 (cm) frog from the genus "Rana" in the family Ranidae. This species can be found in the Coast Ranges from northern Oregon, through California, and into Baja California, Mexico as well as in the foothills of the Sierra Nevada and southern Cascade Range in California. The foothill yellow-legged frog is a Federal Species of Concern and California State Endangered.## Appearance.The foothill yellow-legged frog has a grey, brown, or reddish dorsum, or the back of the frog. It is commonly spotted or mottled, but occasionally is plainly colored. Adults.

Foothill yellow-legged frog. their counterparts do not.Both the Columbia spotted frog and the Cascades frog, also part of the genus "Rana", live in the northern regions of this frog's territory.## Food sources.Food supplies, such as algae the tadpoles eat, also affect the sexual maturity of the species. Reportedly, the "amount of protein in different algae, can affect size at and time to metamorphosis" and "these food effects may be mediated through diet-induced changes in thyroid function", which means the food the tadpoles ingest dictates the changes in the thyroid gland's production of certain proteins. Tadpoles most commonly feed on algae, diatoms, and detritus.

Foothill yellow-legged frog. sunny banks.## Chemical defense."R. boylii" uses a chemical defense to protect itself from fungal infections, such as the "Batrachochytrium dendrobatidis". The frog secretes a peptide through the skin and the hydrophobic (water repellent) sections of the peptide access to fungi that want to attach to the amphibian. This ability can also be found in other "Rana" species, including the Cascades frog and the moor frog. The former secretes a milky substance that fights against fungal infections and the latter uses its capability to have males turn blue during mating season. Still, the foothill yellow-legged frog's chemical defense has not been.

Foothill yellow-legged frog. frog. This species is also estimated to be gone from most of its range in the Sierra Nevada, especially south of Highway 80, where pesticides often contaminate rivers, and dams block the essential stream flows.## Predators.The foothill yellow-legged frog is a natural prey of diving beetles, water bugs, garter snakes, rough-skinned newts, bullfrogs, and western toads. (2005): Phylogeny of the New World true frogs ("Rana"). "Mol. Phylogenet. Evol." 34(2): 299–314. PDF fulltext. (2007) Constraints in naming parts of the Tree of Life. "Molecular Phylogenetics and Evolution" 42: 331–338. Database entry includes a range map and justification for why this species.

Foothill yellow-legged frog. is near threatened"Rana boylii". AmphibiaWeb. 21 April 2009 <http://amphibiaweb.org/cgi-bin/amphib_query?where-genus=Rana&where-species=boylii>Ashton, Don T., Amy J. Lind, and Kary E. Schlick. "Foothill Yellow-Legged Frog ("Rana boylii") Natural History". USDA Forest Service (1998). <http://www.krisweb.com/biblio/gen_usfs_ashtonetal_1997_frog.pdf>.Benard, Michael F., and et al. "Effects of Chytrid and Carbaryl Exposure on Survival, Growth and Skin Peptide Defenses in Foothill Yellow-legged Frogs". Environmental Science and Technology 41 (2007): 1771–1776. <https://web.archive.org/web/20080904233412/http://www.jcu.edu.au/school/phtm/PHTM/frogs/papers/davidson-2007.pdf>.C. Michael Hogan (2008) "Rough-skinned Newt (Taricha granulosa)", Globaltwitcher, ed. Nicklas StrombergRobert N. Fisher and Ted J. Case (2003) "A Field Guide to the Reptiles and Amphibians of Coastal Southern California", U.S. Geological Survey, Western Ecological Research Center.


Question: Which city or region does this park locate in?

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Mehrauli Archaeological Park. Mehrauli Archaeological Park is an archaeological area spread over 200 acre in Mehrauli, Delhi, adjacent to Qutub Minar World Heritage Site and the Qutb complex. It consists of over 100 historically significant monuments. It is the only area in Delhi known for 1,000 years of continuous occupation, and includes the ruins of Lal Kot built by Tomar Rajputs in 1060 CE, making it the oldest extant fort of Delhi, and architectural relics of subsequent period, rule of Khalji dynasty, Tughlaq dynasty, Lodhi dynasty of Delhi Sultanate, Mughal Empire, and the British Raj.## Overview.The region contains sites like Tomb of Balban,.

Mehrauli Archaeological Park. the area as an archaeological park and conservation of important structures started in 1997, in collaboration between Delhi Tourism and Transportation Development Corporation (DTTDC), the State Department of Archaeology, the Delhi Development Authority (DDA) and the Indian National Trust for Art and Cultural Heritage (INTACH), which first started systematic documentation of structures in the area and also started conducting heritage walks since 2000.Over the years, INTACH has restored some 40 monuments in the Park and added signages, heritage trails, and sandstone trail-markers. Qutb complex History of Delhi Baolis of Mehrauli List of Monuments of National Importance in Delhi Mehrauli Archaeological.

Mehrauli Archaeological Park. Park Conservation INTACH Heritage Walks: Mehrauli Archaeological Park at INTACH Monuments of Delhi Mehrauli Archaeological Park. World History Encyclopedia. Retrieved from https://www.worldhistory.org/article/1736/mehrauli-archaeological-park/.


Question: Which historic county does this building belong to?

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Brooklands. Brooklands was a 2.767 (mi) motor racing circuit and aerodrome built near Weybridge in Surrey, England, United Kingdom. It opened in 1907 and was the world's first purpose-built 'banked' motor racing circuit as well as one of Britain's first airfields, which also became Britain's largest aircraft manufacturing centre by 1918, producing military aircraft such as the Wellington and civil airliners like the Viscount and VC-10.The circuit hosted its last race in August 1939 and today part of it forms the Brooklands Museum, a major aviation and motoring museum, as well as a venue for vintage car, motorcycle and other transport-related.

Brooklands. Heritage and increased by the DCMS in 2002). A draft Brooklands Conservation Plan was instigated by English Heritage and prepared in 2003 for DaimlerChrysler by DCUK consultants Terence O'Rourke. A Brooklands Heritage Partnership (BHP) was formed in 2010 as an informal partnership of Brooklands Museum, Elmbridge Borough Council, English Heritage and Surrey County Council, to address increasing conservation issues and concerns. In April 2013, a £32,540 grant was secured from English Heritage (now Historic England) to enable the BHP to appoint professional consultants to research and compile a comprehensive reference document on all aspects of Brooklands’ heritage. A draft version.


Question: What country does this place belong to?

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Sugarloaf Mountain. Sugarloaf Mountain ( ) is a peak situated in Rio de Janeiro, Brazil, at the mouth of Guanabara Bay on a peninsula that juts out into the Atlantic Ocean. Rising 396 (m) above the harbor, its name is said to refer to its resemblance to the traditional shape of concentrated refined loaf sugar. It is known worldwide for its cableway and panoramic views of the city and beyond.The mountain is one of several monolithic granite and quartz mountains that rise straight from the water's edge around Rio de Janeiro. Geologically, it is considered part of a family of steep-sided rock.

Sugarloaf Mountain. outcroppings known as non-inselberg bornhardts.The mountain is protected by the Sugarloaf Mountain and Urca Hill Natural Monument, created in 2006. This became part of a World Heritage Site declared by UNESCO in 2012.## Origins of the name.The name Sugarloaf was coined in the 16th century by the Portuguese during the heyday of sugarcane trade in Brazil. According to historian Vieira Fazenda, blocks of sugar were placed in conical molds made of clay to be transported on ships. The form of the peak reminded them of the well-known resulting "sugarloaf" shape, and the nickname has since been extended to be a.

Sugarloaf Mountain. 220 (m) high. The second car ascends to Pão de Açúcar. The Swiss-made bubble-shaped cars offer passengers 360° views of the surrounding city. The ascent takes three minutes from start to finish.1907 – Brazilian engineer Augusto Ferreira Ramos had the idea of linking the hills through a path in the air.1910 – The same engineer founded the Society of Sugar Loaf and the same year the works were started. The project was commissioned in Germany and built by Brazilian workers. All parts were taken by climbing mountains or lifted by steel cables.1912 – Opening of the cableway, the first in.

Sugarloaf Mountain. Brazil and the third of this kind worldwide; the first cable cars were made of coated wood and were used for 61 years.1973 – The current models of cars were put into operation. This increased the carrying capacity by almost ten times.2009 – Inauguration of the next generation of cable cars that had already been purchased and are on display at the base of Red beach2020 – Closed in March 2020 & partially reopened in August 2020.## Rock climbing.There are rock climbing routes on Sugarloaf that are mostly multipitch and are a mixture of sport and trad. There are also.


Question: What is the closest upper taxonomy of this animal?

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Common box turtle. The common box turtle ("Terrapene carolina") is a species of box turtle with six existing subspecies. It is found throughout the Eastern United States and Mexico. The box turtle has a distinctive hinged lowered shell (the box) that allows it to completely enclose itself. Its upper jaw is long and curved.The turtle is primarily terrestrial and eats a wide variety of plants and animals. The females lay their eggs in the summer. Turtles in the northern part of their range hibernate over the winter.Common box turtle numbers are declining because of habitat loss, roadkill, and capture for the pet trade.

Common box turtle. The species is classified as vulnerable to threats to its survival by the IUCN Red List. Three U.S. states name subspecies of the common box turtle as their official reptile.## Classification."Terrapene carolina" was first described by Carl Linnaeus in his landmark 1758 10th edition of "Systema Naturae". It is the type species for the genus "Terrapene" and has more subspecies than the other three species within that genus. The eastern box turtle subspecies was the one recognized by Linnaeus. The other five subspecies were first classified during the 19th century. In addition, one extinct subspecies, "T. c. putnami", is distinguished.SubspeciesParentheses.

Common box turtle. around the name of an authority indicate that he originally described the subspecies in a genus other than "Terrapene".## Description.The common box turtle ("Terrapene carolina") gets its common name from the structure of its shell which consists of a high domed carapace (upper shell), and large, hinged plastron (lower shell) which allows the turtle to close the shell, sealing its vulnerable head and limbs safely within an impregnable box. The carapace is brown, often adorned with a variable pattern of orange or yellow lines, spots, bars or blotches. The plastron is dark brown and may be uniformly coloured, or show.

Common box turtle. darker blotches or smudges.The common box turtle has a small to moderately sized head and a distinctive hooked upper jaw. The majority of adult male common box turtles have red irises, while those of the female are yellowish-brown. Males also differ from females by possessing shorter, stockier and more curved claws on their hind feet, and longer and thicker tails.There are six living subspecies of the common box turtle, each differing slightly in appearance, namely in the colour and patterning of the carapace, and the possession of either three or four toes on each hind foot. The subspecies "Terrapene carolina.

Common box turtle. triunguis" is particularly distinctive as most males have a bright red head.## Distribution.The common box turtle inhabits open woodlands, road sides, road middles, marshy meadows, floodplains, scrub forests and brushy grasslands in much of the eastern United States, from Maine and Michigan to eastern Texas and south Florida. It was once found in Canada in southern Ontario and is still found in Mexico along the Gulf Coast and in the Yucatán Peninsula. The species range is not continuous as the two Mexican subspecies, "T. c. mexicana" (Mexican box turtle) and "T. c. yucatana" (Yucatán box turtle), are separated from the.

Common box turtle. US subspecies by a gap in western Texas. Three of the US subspecies; "T. c. carolina" (eastern box turtle), "T. c. major" (Gulf Coast box turtle) and "T. c. bauri" (Florida box turtle); occur roughly in the areas indicated by their names. "T. c. triunguis" (three-toed box turtle) is found in the central United States. The species has become extirpated from Ontario and Canada as a whole.## Behavior.Common box turtles are predominantly terrestrial reptiles that are often seen early in the day, or after rain, when they emerge from the shelter of rotting leaves, logs, or a mammal burrow to.

Common box turtle. forage. These turtles have an incredibly varied diet of animal and plant matter, including earthworms, snails, slugs, insects, wild berries, roots, flowers, fungi, fish, frogs, salamanders, snakes, birds, eggs, and sometimes even animal carrion (in the form of dead ducks, amphibians, assorted small mammals, and even a dead cow).In the warmer summer months, common box turtles are more likely to be seen near the edges of swamps or marshlands, possibly in an effort to stay cool. If common box turtles do become too hot, (when their body temperature rises to around 32 °C), they smear saliva over their legs and.

Common box turtle. head; as the saliva evaporates it leaves them comfortably cooler. Similarly, the turtle may urinate on its hind limbs to cool the body parts it is unable to cover with saliva.Courtship in the common box turtle, which usually takes place in spring, begins with a "circling, biting and shoving" phase. These acts are carried out by the male on the female. Following some pushing and shell-biting, the male grips the back of the female's shell with his hind feet to enable him to lean back, slightly beyond the vertical, and mate with the female. Remarkably, female common box turtles can.

Common box turtle. store sperm for up to four years after mating, and thus do not need to mate each year.In May, June or July, females normally lay a clutch of 1 to 11 eggs into a flask-shaped nest excavated in a patch of sandy or loamy soil. After 70 to 80 days of incubation, the eggs hatch, and the small hatchlings emerge from the nest in late summer. In the northern parts of its range, the common box turtle may enter hibernation in October or November. They burrow into loose soil, sand, vegetable matter, or mud at the bottom of streams and.

Common box turtle. pools, or they may use a mammal burrow, and will remain in their chosen shelter until the cold winter has passed. The common box turtle has been known to attain the greatest lifespan of any vertebrate outside of the tortoises. One specimen lived to be at least 138 years of age.## Human interaction.## Conservation.Although the common box turtle has a wide range and was once considered common, many populations are in decline as a result of a number of diverse threats. Agricultural and urban development is destroying habitat, while human fire management is degrading it. Development brings with it an.

Common box turtle. additional threat in the form of increased infrastructure, as common box turtles are frequently killed on roads and highways. Collection for the international pet trade may also impact populations in some areas. The life history characteristics of the common box turtle (long lifespan and slow reproductive rate) make it particularly vulnerable to such threats. The common box turtle is therefore classified as a vulnerable species on the IUCN Red List. The common box turtle is also listed on Appendix II of the Convention on International Trade in Endangered Species (CITES), meaning that international trade in this species should be carefully.

Common box turtle. monitored to ensure it is compatible with the species' survival. In addition, many U.S. states now regulate or prohibit the taking of this species.This species also occurs in a number of protected areas, some of which are large enough to protect populations from the threat of development, while it may also occur in the Sierra del Abra Tanchipa Biosphere Reserve, Mexico. Conservation recommendations for the common box turtle include establishing management practices during urban developments that are sympathic to this species, as well as further research into its life history and the monitoring of populations.## State reptiles.Common box turtles are.

Common box turtle. official state reptiles of four U.S. states. North Carolina and Tennessee honor the eastern box turtle, Missouri names the three-toed box turtle, and Kansas adopted the ornate box turtle in 1986.In Pennsylvania, the eastern box turtle made it through one house of the legislature, but failed to win final naming in 2009. In Virginia, bills to honor the eastern box turtle failed in 1999 and then in 2009. Although a sponsor of the original failed 1998 bill, in 2009, Delegate Frank Hargrove, of Hanover, asked why Virginia would make an official emblem of an animal that retreats into its shell.

Common box turtle. when frightened and dies by the thousands crawling across roads. However, the main problem in Virginia was that the creature was too closely linked to neighbor state North Carolina.


Question: What is this plant named after?

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Morus (plant). Distribution.Black, red, and white mulberries are widespread in Southern Europe, the Middle East, northern Africa, and the Indian subcontinent, where the tree and the fruit have names under regional dialects. Black mulberry was imported to Britain in the 17th century in the hope that it would be useful in the cultivation of silkworms. It was much used in folk medicine, especially in the treatment of ringworm. Mulberries are also widespread in Greece, particularly in the Peloponnese, which in the Middle Ages was known as Morea, deriving from the Greek word for the tree (, "").## Cultivation.Mulberries can be grown from.


Question: What is the country of origin of this food?

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Caprese salad. Caprese salad ( or simply "caprese") is a simple Italian salad, made of sliced fresh mozzarella, tomatoes, and sweet basil, seasoned with salt, and olive oil. It is usually arranged on a plate in restaurant practice. Like pizza Margherita, it features the colours of the Italian flag: green, white, and red. In Italy, it is usually served as an "antipasto" (starter), not a "contorno" (side dish), and it may be eaten any time of day. The caprese salad is one form of a caprese dish; it may also be served as a caprese pizza, pasta, or sandwich.The salad is named.

Caprese salad. after the island of Capri, where it is believed to have originated. Two common stories about its origin include it being an homage to the Italian flag or "in the 20th century to appease the palates of vacationing royalty and important politicos."## Variants.Variations of Caprese salad may include Italian dressing or pesto in place of olive oil, or balsamic vinegar in addition to it. Olives may appear, along with arugula (rocket) or romaine lettuce to augment the basil. Oregano or black pepper is sometimes added. Buffalo mozzarella can be substituted for mozzarella to intensify flavor. It can also have pasta.

Caprese salad. or rice mixed in with it, to make it a grain salad. List of Italian dishes List of salads List of tomato dishes.


Question: What is the length in kilometre is the mountain in the image?

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Salève. Salève, a cable car, since 1932 (rebuilt in 1983). The Salève stretches between Étrembières in the north and the suspension bridge of La Caille in the south. Between 1892 and 1935, the Salève was served by the first electric rack railway in the world (Chemin de fer du Salève).The eastern side of the Salève dives under the molasse of the Bornes Massif while the abrupt mountain slope facing Geneva is subject to erosion. The vegetation – or the absence thereof – enhances the limestone's layers. This side of the mountain is slit by several narrow and deep gorges, among which.

Salève. the Grande Varappe, which at the end of the 19th century gave its name to the activity of rock climbing in French. This discipline developed intensely there, at a time when it was only beginning.The Monnetier Valley, separating the Petit and Grand Salève, is due to glaciary erosion. Modern geologists now think that this valley was dug by the subglaciary currents in a fissured region between the Petit and Grand Salève and not by the Arve as was assumed earlier.## From prehistory to green tourism.Between 12,000 and 10,000 BC, the Salève hosted a magdalenian site. From 1833, Genevan physician François.

Salève. proposed by Lamartine in 1825 as the conclusion of his friend Lord Byron's uncompleted poem, is located on the Salève. Byron died in 1824. (See the French page for the complete "Dedicace"). "Le Ruisseau" is a poem by Théophile Gautier located on the foot of the Salève (1869). (See the French page for the complete poem).## The Salève in paintings.The Salève occurs on one of the first European paintings depicting a realistic landscape, "La Pêche Miraculeuse" by Konrad Witz created in 1444.Cable carHike club starting 10am on Sundays mornings from Veyrier-DouaneSaleve Airlines, school of paraglidingShedrub Choekhor Ling site.


Question: Which city or region does this building locate in?

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Corn Palace. The Corn Palace, commonly advertised as The World's Only Corn Palace and the Mitchell Corn Palace, is a multi-purpose arena/facility located in Mitchell, South Dakota, United States. The Moorish Revival building is decorated with crop art; the murals and designs covering the building are made from corn and other grains, and a new design is constructed each year. The Corn Palace is a popular tourist destination, visited by up to 500,000 people each year.The Corn Palace serves the community as a venue for concerts, sports events, exhibits and other community events. Each year, the Corn Palace is celebrated with a.

Corn Palace. Palace in Sioux City, Iowa, that was active from 1887–1891; a Corn Palace in Gregory, South Dakota; a Grain Palace in Plankinton, South Dakota; and a Bluegrass Palace in Creston, Iowa. From 1887 to 1930, at least thirty-four corn palaces were built across the Midwest United States; only the Mitchell Corn Palace has remained intact.The original Mitchell Corn Palace (known as "The Corn Belt Exposition") was built in 1892 to showcase the rich soil of South Dakota and encourage people to settle in the area. It was a wooden castle structure on Mitchell's Main Street, constructed on land donated by.

Corn Palace. Louis Beckwith, a member of the First Corn Palace Committee. In 1904–1905, the city of Mitchell mounted a challenge to the city of Pierre in an unsuccessful attempt to replace it as the state capital of South Dakota. As part of this effort, the Corn Palace was rebuilt in 1905. In 1921, the Corn Palace was rebuilt once again, with a design by the architectural firm Rapp and Rapp of Chicago. Russian-style onion domes and Moorish minarets were added in 1937, giving the Palace the distinctive appearance that it has today.In 2004, national media attention was drawn to the Corn.

Corn Palace. Artists' drawings are transferred to black tar paper labeled with codes corresponding to colors, providing a "corn-by-numbers" pattern showing where each colored cob should be nailed. Corn cobs are split in two lengthwise and nailed to the exterior of the building, using approximately 1.5 million nails and 325,000 ears of corn. Mitchell Chamber of Commerce. "A Year by Year History Of ... The World's Only Corn Palace". 5th ed. Mitchell, SD: Educator Supply Company, 1957. Corn Palace Convention & Visitors Bureau Corn Palace Festival Corn Palace Stampede Rodeo Corn Palace Fan Site Corn Palace Fan Site.


Question: How many offspring can this animal produce at the same time?

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Gray fox. in North America. This explains the gray fox's tendency to change behavior in response to the coyote threat, as they are essentially lower on the food chain. ## Reproduction.The gray fox is assumed to be monogamous, like other foxes. The breeding season of the gray fox varies geographically; in Michigan, the gray fox mates in early March, in Alabama, breeding peaks occur in February. The gestation period lasts approximately 53 days. Litter size ranges from 1–7, with a mean of 3.8 young per female.The sexual maturity of females is around 10 months of age. Kits begin to hunt with their.


Question: What is the closest upper taxonomy of this plant?

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Pluteus cervinus. Pluteus cervinus, also known as Pluteus atricapillus and commonly known as the deer shield or the deer or fawn mushroom, is a mushroom that belongs to the large genus "Pluteus". It is found on rotten logs, roots and tree stumps and is widely distributed. It can also grow on sawdust and other wood waste. Being very variable in appearance, it has been divided into several varieties or subspecies, some of which are sometimes considered species in their own right. It is edible when young, but considered by some to be of poor quality and is not often collected for the.

Pluteus cervinus. table.## Taxonomy.The species name, "cervinus", although generally thought to refer to the colour of the cap, actually refers to antler-like protrusions on its prominent thick-walled pleurocystidia (of which there can be one to three).## Description.The cap ranges from in diameter. Initially it is bell-shaped, and often wrinkled when young. Later it expands to a convex shape. The cap can be deer-brown, but vary from light ochre-brown to dark brown, with a variable admixture of grey or black. The centre of the cap may be darker. The cap surface is smooth and matte to silky-reflective. The cap skin shows dark radial.

Pluteus cervinus. fibres when seen through a lens, indicating that the microscopic cuticle structure is filamentous. The gills are initially white, but soon show a distinctive pinkish sheen, caused by the ripening spores. The stipe is 5–12 cm long and 0.5–2 cm in diameter, usually thicker at the base. It is white and covered with brown vertical fibrils. The flesh is soft and white. The mushroom has a mild to earthy radish smell and a mild taste at first, which may become slightly bitter.The spore size is approximately 8×5μ, and the individual spores are elliptical and smooth. The spore print is salmon-pink.

Pluteus cervinus. to reddish brown.It grows on logs and stumps, and can be found most commonly in the spring and fall.## Similar species.The species looks similar to some dangerous "Entoloma" species, which also have pink spore prints but grow on the ground. Other similar species include "P. atromarginatus", "P. romellii", and "P. petasatus".List of "Pluteus" speciesThis article is partly translated from .Meinhard Moser: "Basidiomycetes II: Röhrlinge und Blätterpilze", Gustav Fischer Verlag Stuttgart (1978). English edition: translated by Simon Plant: "Keys to Agarics and Boleti" (Roger Phillips 1983)Régis Courtecuisse, Bernard Duhem : "Guide des champignons de France et d'Europe" (Delachaux & Niestlé, 1994-2000).


Question: What place is the lake outflow to?

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Adventfjorden. Adventfjorden (Advent Bay) is a 7 km long and 4 km wide bay running south-eastwards from the southern side of Isfjorden, on the west coast of Spitsbergen in Svalbard. The name represents a corruption of "Adventure Bay" - probably named after the Hull-built whaleship "Adventure", which operated in Isfjorden in 1656. The fjord was originally known as "Klass Billen Bay". At the head of Adventfjorden is Adventdalen (Advent Valley).The former mining-camp of Longyearbyen (now Svalbard's main town) lies on the fjord's southwestern shore, while another former mining-camp, Hiorthhamn, is located on its northeastern shore.Conway, W. M. 1906. No Man's Land:.


Question: What is the spore print color of this plant?

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Cerioporus squamosus. Cerioporus squamosus aka "Polyporus squamosus" is a basidiomycete bracket fungus, with common names including dryad's saddle and pheasant's back mushroom. It has a widespread distribution, being found in North America, Australia, Asia, and Europe, where it causes a white rot in the heartwood of living and dead hardwood trees. The name "dryad's saddle" refers to creatures in Greek mythology called dryads who could conceivably fit and ride on this mushroom, whereas the "pheasant's back" analogy derives from the pattern of colors on the bracket matching that of a pheasant's back.## Etymology."Squamosus" comes from the Latin "squamosus" meaning covered with scales.

Cerioporus squamosus. or scaly, referring to the signature dark brown scales found on the mushroom's cap.## Taxonomy.The species was first described scientifically by British botanist William Hudson in 1778, who named it "Boletus squamosus". It was given its current name in 1886 by Quélet but is still widely known by the Friesian name "Polyporus squamosus".## Description.Dryad's Saddle is an annual mushroom commonly found attached to dead logs and stumps or on living hardwood trees at one point with a thick stem. Generally, the fruit body is round and between 8 – 30 (cm) across and up to 10 (cm) thick. The body.

Cerioporus squamosus. can be yellow to brown and has "squamules" or scales on its upper side. On the underside one can see the pores that are characteristic of the genus "Cerioporus"; they are made up of tubes packed together closely. The tubes are between 1 and 12 (mm) long. The stalk is thick and short, up to 5 (cm) long. The fruit body will produce a white spore print if laid onto a sheet of paper. The spores are 11-15 x 4-5 µm and are long and smooth ellipsoids. They can be found alone, in clusters of two or three, or forming.

Cerioporus squamosus. made from this and many other mushrooms of the genus "Cerioporus". The mushroom's smell resembles watermelon rind. "Polyporus squamosus" has a mild nutty flavour. Mushroom-Collecting.com: Polyporus squamosus – Dryad's Saddle Mushroom-Collecting.com: Dryad's Saddle, Pheasant Back Mushroom, Hawks Wing (Polyporus squamosus).


Question: What is the spore print color of this plant?

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Pluteus cervinus. fibres when seen through a lens, indicating that the microscopic cuticle structure is filamentous. The gills are initially white, but soon show a distinctive pinkish sheen, caused by the ripening spores. The stipe is 5–12 cm long and 0.5–2 cm in diameter, usually thicker at the base. It is white and covered with brown vertical fibrils. The flesh is soft and white. The mushroom has a mild to earthy radish smell and a mild taste at first, which may become slightly bitter.The spore size is approximately 8×5μ, and the individual spores are elliptical and smooth. The spore print is salmon-pink.


Question: Who is the owner of this building?

Instruction: Determine the Wikipedia snippet that matches the question of this image.

Old Courthouse (St. Louis). The Old St. Louis County Courthouse was built as a combination federal and state courthouse in St. Louis, Missouri. Missouri's tallest habitable building from 1864 to 1894, it is now part of Gateway Arch National Park and operated by the National Park Service for historical exhibits and events.## History.Land for the courthouse was donated in 1816 by Judge John Baptiste Charles Lucas and St. Louis founder Auguste Chouteau. Lucas and Chouteau required the land be "used forever as the site on which the courthouse of the County of St. Louis should be erected." The Federal style courthouse was completed in.

Old Courthouse (St. Louis). around the courthouse in the center of St. Louis for the new Gateway Arch National Park, which was then known as Jefferson National Expansion Memorial. President Franklin Roosevelt declared in an Executive Order the area would be a national monument and landscape design, sidewalks and other infrastructure was added. The courthouse formally became part of the new monument area in 1940. Replaced in 1941, the roof was renovated in 1955, 1985 and 2010. The National Park Service maintains four history galleries on St. Louis and NPS offices within. The courthouse once had up to 12 courtrooms, but now there are.


Question: Who designed this facility?

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La Recoleta Cemetery. () and a church, Our Lady of Pilar ("), built in 1732.The order was disbanded in 1822, and the garden of the convent was converted into the first public cemetery in Buenos Aires. Inaugurated on 17 November of the same year under the name of " (Northern Cemetery), those responsible for its creation were the then-Governor Martin Rodríguez, who would be eventually buried in the cemetery, and government minister Bernardino Rivadavia.The 1822 layout was done by French civil engineer Próspero Catelin, who also designed the current facade of the Buenos Aires Metropolitan Cathedral. The cemetery was last remodeled in 1881,.


Question: What is the closest parent taxonomy of this plant?

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Laetiporus gilbertsonii. Laetiporus gilbertsonii is a species of polypore fungus in the family Fomitopsidaceae. It is found in western North America. It was one of three new "Laetiporus" species published in 2001, which were distinguished genetically from the common "Laetiporus sulphureus"; the others were "L. conifericola" and "L. huroniensis". The type collection, made in San Francisco's Golden Gate Park in 1997, was found fruiting on a eucalyptus tree. It has also been collected in Oregon and Washington. The fungus is named in honor of mycologist Robert Lee Gilbertson. "L. gilbertsonii" is edible, although some people have reported experiencing upset stomach after consuming.

Laetiporus gilbertsonii. it. "Laetiporus conifericola" is very similar in appearance, but is readily distinguished by its growth on conifers.