zygodactyl

adjective

1. 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.

noun

2. a zygodactyl bird.

adjective Also: zygodactylous

1. (of the feet of certain birds) having the first and fourth toes directed backwards and the second and third forwards

noun

2. a zygodactyl birdCompare heterodactyl