Dusky Hummingbirds are common in their limited range in southwestern Mexico. They prefer open or partly open arid areas with shrubs or trees and sometimes can be found along roadsides or in gardens. Males have a vibrant red bill tipped with black, and both sexes have a white stripe behind the eye. Females can be easily confused with female Broad-billed Hummingbirds (Cyanthus latirostris). These hummingbirds vocalize with a chattering call that is softer than the chatter of the Broad-billed Hummingbird.