<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>bhawks</author><text>If anything I would say their ability to cope with the poor medium indicates even more complex levels of understanding.&lt;p&gt;They are able to reason that it is a real bird, it is not physically present, doesn&amp;#x27;t sound perfect, doesnt look right but they still engage despite all of that friction.</text><parent_chain><item><author>Findecanor</author><text>I&amp;#x27;m curious to how the parrots perceive the video images ... with cameras, codecs and screens tuned to a human visual system.&lt;p&gt;While our eyes have three primaries (red, green, blue), birds have &lt;i&gt;four&lt;/i&gt; and can see into the ultraviolet — which is missing. The &amp;quot;cones&amp;quot; in their retinas also have additional colour filters, which allows them to notice differences in hues, and thereby quantisation in the codec&amp;#x27;s colour planes easier than humans.
Birds&amp;#x27; eyes are also faster, so they might find the frame rate to be irritatingly low, and PWM-driven backlight would need to use high frequencies so as to not be perceived as flickering.&lt;p&gt;The paper does mention these issues and finds that the birds seem to &lt;i&gt;cope&lt;/i&gt; — but I anticipate that they would give criticism if they could. :)</text></item></parent_chain></comment><story><title>Parrots learn to make video calls to chat with other parrots: study</title><url>https://news.northeastern.edu/2023/04/21/parrots-talking-video-calls/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>dorfsmay</author><text>Humans took pictures and watched movies and TV in black and white without any issue. High def colour is nice but not a must have to communicate.</text><parent_chain><item><author>Findecanor</author><text>I&amp;#x27;m curious to how the parrots perceive the video images ... with cameras, codecs and screens tuned to a human visual system.&lt;p&gt;While our eyes have three primaries (red, green, blue), birds have &lt;i&gt;four&lt;/i&gt; and can see into the ultraviolet — which is missing. The &amp;quot;cones&amp;quot; in their retinas also have additional colour filters, which allows them to notice differences in hues, and thereby quantisation in the codec&amp;#x27;s colour planes easier than humans.
Birds&amp;#x27; eyes are also faster, so they might find the frame rate to be irritatingly low, and PWM-driven backlight would need to use high frequencies so as to not be perceived as flickering.&lt;p&gt;The paper does mention these issues and finds that the birds seem to &lt;i&gt;cope&lt;/i&gt; — but I anticipate that they would give criticism if they could. :)</text></item></parent_chain></comment><story><title>Parrots learn to make video calls to chat with other parrots: study</title><url>https://news.northeastern.edu/2023/04/21/parrots-talking-video-calls/</url></story>