- Also zy·go·dac·ty·lous. (of a bird) having the toes of each foot arranged in pairs, with two toes in front and two behind.
- a zygodactyl bird.
adjective Also: zygodactylous
- (of the feet of certain birds) having the first and fourth toes directed backwards and the second and third forwards
- a zygodactyl birdCompare heterodactyl