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How Evolution Reshaped the Woodcock

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How Evolution Reshaped the Woodcock

Evolution works with what's at hand. So if you start with a normal bird skull – bill pointing forward, eyes oriented front or sideways, ears behind eyes – and introduce the challenge of seeing behind your head while your bill is pushed deeply into the soil, what do you get? The American Woodcock! With its long bill constantly probing the soil for earthworms, its entire skull has been rearranged. Relative to other birds, woodcocks' eyes have moved toward the top and rear of the skull, pushing the ear openings downward. Apparently the brain followed suit!

More info and transcript at BirdNote.org.

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Videnskab
Naturhistorie
Engelsk
USA
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