Gray Vireo

The Gray Vireo (Vireo vicinior) is a small North American passerine bird. It breeds from the southwestern United States and northern Baja California to western Texas. It is a migrating species that spend the winters in southwest Texas' Big Bend National Park, western Sonora State, and the southern Baja Peninsula in Baja California Sur. In its Mexican breeding grounds, it is typically located between 1,300 and 8,200 feet (400 to 2,500 meters) above sea level. This vireo frequents the juniper on the slopes of the southwest Alps, which is dry scrub.

The gray vireo is a 14 cm long bird with a dull white underside and gray upper parts. It has an eye ring and one very thin wing bar. Its short, thick bill is present. The sexes are similar. One of a kind among vireos, its tail twitches sideways and resembles a gnatcatcher's. It feeds mainly on insects, and birds that overwinter in Mexico additionally consume fruit.