Vireos (Vireonidae)

Grey Vireo (Vireo vicinior) - HBW 15, p. 423

French: Viréo gris German: Grauvireo Spanish: Vireo Gris
Other common names: Grey Greenlet

Taxonomy: Vireo vicinior Coues, 1866, Fort Whipple, Arizona, USA.
Has been suggested that dark birds with deep black bill from Nachoguero Valley (Baja California) and NC Durango, in NW Mexico, might represent a distinct race. Currently treated as monotypic.

Distribution: Breeds in SW USA from Wyoming (occasional), C & E Utah, S Nevada and S California E, discontinuously, to W Colorado, N & E Arizona, W, N & SE New Mexico and W Texas (Big Bend and adjacent areas), and NW & N Mexico (N Baja California and N Coahuila). Migrates to non-breeding areas from SW Arizona S to NW Mexico (W Sonora, S Baja California) and in SW Texas.