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anatomy

Learn about this topic in these articles:

cuckoo rollers

  • In cuckoo roller

    …is also distinguished by its zygodactyl feet, with each foot having two forward-pointing and two backward-pointing toes. Males are iridescent green above and gray below; females are brown above with tan and black spots below.

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cuckoos

  • Cuckoo (Cuculus).
    In cuckoo

    …forms) and the feet are zygodactyl; i.e., the outer toe is reversed, pointing backward. The bill is rather stout and somewhat downcurved.

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parrots

  • Black-capped parakeet (Pyrrhura rupicola)
    In psittaciform: Feet

    …backward; this arrangement is called zygodactyl, which literally means “yoke-toed” and refers to the occurrence of toes in pairs. Zygodactyly also occurs in woodpeckers and their allies (Piciformes), cuckoos (Cuculiformes), and some other birds. The proximal (upper) bone of a bird’s foot, the tarsometatarsus (commonly considered the lower leg), lies…

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