What does it mean when scientists say “an eagle can see a rabbit in a field from a mile away”. Is their vision automatically more zoomed in? Do they have better than 20/20 vision? Is their vision just clearer?
In: Biology
Eagles’ retinas have cone-rich structures found towards the back of the eye. This causes them to have outstanding vision of 20/5, which gives them the ability to spot small prey 100’s of ft above the ground (and allows them to identify shapes separately from a distance with less blur).
They also have the ability to see colors more vividly than humans can, including different shades of particular colors. They have a supreme ultraviolet light range as well, allowing them to see traces of the bodies that their prey make from far away in addition to urine.
Due to the position of their eyes they have a 340 degree field of vision which makes their peripherals pretty good.
Last, their cornea has the ability to change shape to better focus on near and far objects.
So all in all, their eyes have significantly different structures to them that allow them to have crazy good sight.
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