This video is called Monarch Butterfly Amazing Migration.
From Wildlife Extra:
Monarch butterflies to be considered for special protection in US
Monarch butterflies are found throughout the United States and some populations migrate vast distances across multiple generations each year.
Many monarchs fly between the US, Mexico and Canada – a journey of over 3,000 miles.
This journey has become more perilous for many monarchs because of threats along their migratory paths and on their breeding and wintering grounds.
Threats include habitat loss – particularly the loss of milkweed, the monarch caterpillar’s sole food source – and mortality resulting from pesticide use.
Monarch populations have declined significantly in recent years.
The Fish and Wildlife Service was petitioned by the Center for Biological Diversity, the Center for Food Safety, the Xerces Society for Invertebrate Conservation and scientist Dr Lincoln Brower to list a subspecies of monarch (Danaus plexippus plexippus).
The substantial information presented was considered to be indicative that listing may be warranted.
The Service will now conduct a status review, and to ensure this review is comprehensive, scientific and commercial data and other information is being requested through a 60-day public information period.
Specifically, the Service seeks information including:
The subspecies’ biology, range and population trends, habitat requirements, genetics and taxonomy;
Historical and current range, including distribution patterns;
Historical and current population levels and current and projected trends;
The life history or behaviour of the monarch butterfly that has not yet been documented;
Thermo-tolerance range and microclimate requirements of the monarch butterfly;
Past and ongoing conservation measures for the subspecies, its habitat or both;
Factors that are the basis for making a listing determination under the Endangered Species Act.
The notice was published in the Federal Register on 31 December and it is requested that information be received by 2 March 2015.