Костаның құмырсқасы: сипаттамасы мен өмір салты

Species of bird

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. Bourcier chose the specific epithet to honour the French nobleman Louis Marie Pantaleon Costa, Marquis de Beauregard (1806–1864). The type locality is Magdalena Bay on the western coast of the Mexican state of Baja California Sur. Costa's hummingbird is now placed in the genus Calypte that was introduced in 1856 by John Gould. The species is monotypic: no subspecies are recognised.

This species is small, as a mature adult grows to only in length, with a wingspan of 11 cm, and an average weight of 3.05 g for males and 3.22 g for females. The male has a mainly green back and flanks, a small black tail and wings, and patches of white below their gorgeted throat and tail. Its most distinguishing feature is its vibrant purple cap and throat with the throat feathers flaring out and back behind its head. The male makes a high speed dive pass or hover close to the female, perched on a nearby branch, and is accented by a high pitched vibration that is produced by tail feathers. Separately, the male will perch and produce a high pitched, scratch like song. The nest is situated on a yucca stalk or tree limb. The female lays just two eggs, which are white in color, which she will incubate for 15 to 18 days before the young hatch. The young leave the nest after 20 to 23 days.

As common with hummingbird species, Costa's hummingbird feeds on flower nectar and small insects. While feeding in flight, a Costa's hummingbird may hover.

As with other hummingbird species, the Costa's hummingbird can slow its metabolism during cold nights when it enters a hibernation like state known as torpor, with its heart rate and respiration slowing substantially.