 The breeding habitat is in arid scrub of the Sonoran Desert—Chihuahuan Desert ecotone and the Madrean Sky Islands in southeastern Arizona and extreme southwestern New Mexico of the Southwestern United States and northern Sonora of Northwestern Mexico.Outside its breeding range, it will occasionally stray, from southernmost California to Texas, Georgia, and Louisiana.Doubleday's hummingbird is sometimes considered a distinct species by some taxonomic authorities, however the American Ornithological Society still considers it conspecific with this species.