zygodactyl
adjective
- in birds, applied to feet in which two toes point forwards, and two to the rear
Wiktionary
adj
Etymology: From zygo- + -dactyl.
- 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.”
noun
Etymology: From zygo- + -dactyl.
- Any bird with toes of this kind, such as the parrot.