Birds

Costa's hummingbird (Calypte costae) is a bird species in the hummingbird family Trochilidae. It breeds in the arid region of the southwest United States and northwest Mexico; it winters in western Mexico. The desert might seem like a bad place for a creature that feeds at flowers, but it is the favored habitat for Costa's Hummingbird. In Arizona and California deserts, this species nests during late winter and spring, and most then avoid the hot summer by migrating to coastal California and Baja. This bird takes nectar from flowers, and will feed on tiny insects as well. Often visits desert natives such as agave, chuparosa, desert honeysuckle, and fairy-duster. Males sing a thin, high-pitched whistle when perched and when performing a looping dive. From a perch, a male whistles 4 short and thin notes less than 1 second long. During his looping dive, his whistle rises and falls in pitch for about 2.5 seconds. Females call with a sharp, dry tic when foraging or flying, but males rarely call. They call singly or give a series of tics. Males make gentle humming noises with their wings during their looping dive display. Here is a link so you can listen to this bird too