zygodactyl

Etymology

From zygo- + -dactyl.

adj

  1. Having two toes pointing forward, and two pointing backward; zygodactylous.
    In parrots, the tarsometatarsus has a distinct shape resulting from the particular arrangement of parrot toes. As zygodactyl birds, toes number 2 and 3 are facing forward, while toes 1 and 4 are facing backwards. 16 November 2016, Hanneke Meijer, “Sunny steppes? A tiny parrot fossil suggests Siberia was once subtropical”, in The Guardian

noun

  1. (ornithology) Any bird with toes of this kind, such as the parrot.

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