The Broad-billed Hummingbird is a bright green hummingbird with a blue face and striking red bill. It occurs from the southwestern United States, where birds are summer visitors, south through western Mexico to the Isthmus of Tehuantepec. It inhabits streamside vegetation in desert, scrub, and open woodland. It feeds on nectar by hovering at flowers, and insects by hawking in mid-air. Its breeding is timed to coincide with the peak flowering season in a given area. Several populations here included within Broad-billed Hummingbird perhaps represent separate species. The male of the subspecies of the Tres Marias Islands, lawrencei, has a greener throat and a more deeply forked tail. Even more distinctive is doubledayi of southern Mexico, the male of which has a blue crown and more extensive blue on the underparts.