The vireos make up a family, Vireonidae, of small to medium-sized passerine birds found in the New World and Southeast Asia. "Vireo" is a Latin word referring to a green migratory bird, perhaps the female golden oriole, possibly the European greenfinch.
The phainopepla or northern phainopepla is the most northerly representative of the mainly tropical Central American family Ptiliogonatidae, the silky flycatchers. Its name is from the Greek phain pepla meaning "shining robe" in reference to the male's plumage.
The grey-headed chachalaca is a member of an ancient group of birds of the family Cracidae, which are related to the Australasian mound builders. It breeds in lowlands from eastern Honduras to northwestern Colombia at up to 1,100 m (3,600 ft) altitude.
The California gnatcatcher is a small 10.8 cm (4.3 in) long insectivorous bird which frequents dense coastal sage scrub growth. This species was recently split from the similar black-tailed gnatcatcher of the Sonoran and Chihuahuan deserts. This bird is often solitary, but joins with other birds in winter flocks.
The Yucatan vireo is a species of bird in the family Vireonidae.
Vireo is a genus of small passerine birds restricted to the New World. Vireos typically have dull greenish plumage, but some are brown or gray on the back and some have bright yellow underparts. They resemble wood warblers apart from their slightly larger size and heavier bills, which in most species have a very small hook at the tip. The legs are stout.
