|Yellow-throated Vireo (Vireo flavifrons)|
The vireos (/[unsupported input]/) are a group of passerine birds that are mostly in the part of the New World. Their feathers are dull-colored and greenish, the smaller species slightly resembling wood warblers. New evidence from DNA places vireos as relatives of crows. Vireos are mostly shy.
Vireo Facts for Kids. Kiddle Encyclopedia.