Relating to or characteristic of birds with unequal-length toes arranged in the pattern of three forward-pointing and one backward-pointing toe.
From 'anisodactyli' + '-ic' (of or pertaining to). This ornithological adjective describes the toe structure characteristic of most songbirds and many other bird species.
Most birds you see every day—sparrows, robins, chickens—are anisodactylic, which means this 'unequal toes' arrangement is actually the standard design, and other toe arrangements are the special exceptions!
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