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View Diary: Dawn Chorus: I have always relied on the kindness of strangers (101 comments)

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  •  I read a bit about this on Wikipedia (4+ / 0-)
    Recommended by:
    lineatus, KenBee, ivorybill, alefnot

    I need to relearn (and learn for the first time) a bit more about physics and eye anatomy.

    Raptor eyes apparently are anatomically structured to maximize acuity and resolution with the trade off being that they don't function well in low light.  It is also thought that their color vision is probably similar to that of humans, in other words, less powerful than songbirds which can see UV and make finer color distinctions than humans.

    Unfortunately I don't the details of the anatomy beyond what lineatus mentions (very high density of photoreceptors in the retina and lots of neural connections).

    To summarize it seems that raptors have phenomenal vision in terms of fine detail and spatial orientation but are below average (for birds) in color vision and have very poor vision in low light.

    "We are normal and we want our freedom" - Bonzos

    by matching mole on Sun Dec 18, 2011 at 07:40:02 PM PST

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