Feathers - Encyclopedia of the Environment

The feather is a complex structure made of keratin and composed of a pipe (the calamus), planted in the epidermis and extended by a rachis.

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Free Images : tree, nature, branch, flying, wildlife, environment, beak, fauna, encyclopedia, animals, vertebrate, tropical birds, perching bird, fluvicola nengeta, masked water tyrant 2208x1244 - - 896818 - Free stock photos - PxHere

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