zygodactyl
Adjective: 1. Having a toe arrangement where the first and fourth toes point backward and the second and third toes point forward: This term is used in ornithology to describe a specific foot structure found in some birds, such as parrots and woodpeckers, where two toes face forward and two face backward.
This is a specialized biological term. It is used almost exclusively in scientific or technical descriptions of birds and their anatomy. * It functions as a descriptive adjective, typically placed before a noun like "foot," "feet," or "condition." * It can also be used in a predicate position after a linking verb like "is" or "are."
- Adjective (Attributive):
- Parrots have a zygodactyl foot, which gives them a strong grip for climbing and holding food.
- The zygodactyl arrangement is an adaptation for perching and climbing tree trunks.
- Adjective (Predicative):
- The feet of a cuckoo are zygodactyl.
- This species' toes are distinctly zygodactyl.
- The term is often used in contrast with other avian toe arrangements, such as anisodactyl (three toes forward, one back, like in songbirds) or pamprodactyl (all four toes can point forward, like in swifts).
- Zygodactyly (noun): The condition of having zygodactyl feet.
- Zygodactyly is common among birds that climb.
- Zygodactylous (adjective): A less common variant with the same meaning as "zygodactyl."
- Yoke-toed: An older, synonymous term.
- There are no common, non-technical synonyms for this precise anatomical term.
- Anisodactyl: (Adjective) Describing a foot with three toes forward and one toe backward.
- Heterodactyl: (Adjective) Describing a foot with the first and second toes backward and the third and fourth forward (found in trogons).
This word is derived from Greek roots: zygon meaning "yoke" (referring to the paired arrangement) and daktylos meaning "finger" or "toe." It is a highly specific term not used in everyday conversation.
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(of bird feet) having the first and fourth toes directed backward the second and third forward
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