this post was submitted on 12 Nov 2024
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For owls that are superb.
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Great attention to detail!
Owls not only have the ability to dilate their pupils independently, but they can also do it voluntarily. The only thing they can't do with their eyes is to move them, as they are not spherical like ours, but shaped like a light bulb, with the fat end inside their skull. This is why they have to move their entire head to look at things.
To see some more about this independent dilation and how checking its function is used to test for eye injury, check this post and this post.
The second linked post has one of my fav pics of the year as well!