Feather: Anatomy and Function
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Feathers are a unique adaptation of birds. Feathers are made up of keratin, an insoluble protein that is also found in mammalian hair and reptilian scales.
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Set of watercolor bird feathers. Hand drawn illustration 22381102 Stock Photo at Vecteezy, Bird Feathers
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Main parts of a typical contour feather, exemplified by a feather from
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Beautiful abstract white and brown feathers on black background, soft yellow feather texture on white pattern and yellow background, feather background, gold feathers banners Stock Photo, Brown Feathers
