zygodactyle

from The Century Dictionary.

• noun See zygodactyl.
• noun A group of arboricole non-passerine birds whose toes are yoked in pairs, two before and two behind: synonymous with Scansores (which see).

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) The zygodactylous birds. In a restricted sense applied to a division of birds which includes the barbets, toucans, honey guides, and other related birds.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Alternative form of zygodactyl.
• noun Alternative form of zygodactyl.