Calypte costae, commonly known as Costa's Hummingbird, is a small bird with vibrant iridescent plumage, particularly noted for the male's vivid purple crown and gorget. This species inhabits arid deserts and scrublands in the southwestern United States and northwestern Mexico. Known for its rapid, agile flight and territorial nature, it plays a crucial role in pollinating desert flora.

Calypte costae, commonly known as Costa's Hummingbird, is native to the southwestern United States and northwestern Mexico. Its geographical distribution includes parts of California, Arizona, Nevada, and Baja California.

Costa's Hummingbird typically inhabits arid and semi-arid regions, such as deserts and scrublands. The species thrives in environments with sparse vegetation, often relying on areas with flowering plants that provide nectar.

As a nectarivorous bird, Costa's Hummingbird plays a crucial role in pollination. It is well adapted to desert climates, where it can exploit seasonal blooms and adapt to fluctuating water and food availability. Its small size and rapid wing beats enable it to hover efficiently while feeding.