Which anatomical feature, shared with its woodpecker relatives, aids the wryneck in clinging?

Answer

Zygodactylous feet

Wrynecks share zygodactylous feet, meaning the first and fourth toes point backward, which assists them in clinging to branches.

Which anatomical feature, shared with its woodpecker relatives, aids the wryneck in clinging?
fooddietbirdanimalwryneck