Avian vision
Not all birds see like a hawk, but every bird’s eyes are amazing
Contributed by Eldon Greij
Published:
December 22, 2010
Contributing Editor Eldon Greij describes the retina, pecten, orbits, scleral ring, nictitating membrane, and other parts of birds' eyes and explains why the acuity of birds' eyes is at least two or three times greater than that of human eyes. He also tells how the eyes' location on the head determines whether a bird has the frontward-looking binocular vision possessed by hawks, owls, swallows, hummingbirds, and other birds.
Read more about Eldon Greij »
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