American Kestrel, Falco sparverius

American Kestrel, Falco sparverius sparverius. Birds photographed in the greater Santa Barbara area, Santa Barbara, California, September 2021. Photographs courtesy of Dr. Tom Bartol, Carlsbad, California.

American Kestrel, Falco sparverius sparverius. Birds photographed in the bush of the Los Cabos area of Baja California Sur, December 2019. Photographs courtesy of Dr. Tom Bartol, Carlsbad, California.

American Kestrel, Falco sparverius sparverius. Photographs taken within the greater Bahía de los Ángeles area, Baja California, November 2015 and January 2024. Photographs courtesy of George Flicker, Bahía de los Ángeles. Identifications courtesy of Mary & George Flicker, Bahía de los Ángeles.

Background and Identification

Formerly known as the Sparrow Hawk, the American Kestrel, Falco sparverius, is a member of the Falconidae Family of Falcons and Caracaras. There are a total of seventeen known subspecies of which three are fround in Mexico It is one of North America’s smallest and most colorful falcons. Its distinctive markings and hunting style make it a beloved sight for birdwatchers across the continent. In Mexico, the American Kestrel is known as Cernícalo Americano.

 American Kestrels are highly adaptable birds and are found in a variety of habitats. These include open country, cities, farmland, and the edges of woodland. They tend to thrive in open areas such as grasslands, deserts, fields, meadows, and even some urban environments due to the magnitude of food sources. They consume large insects, birds, small mammals, and reptiles. When looking for this species, birdwatchers should check for perched Kestrels on utility lines and fence posts, or hovering Kestrels over farm fields and meadows as they hunt for prey.

The American Kestrel’s range extends from Alaska and Canada down to the southernmost tip of South America. They are found throughout Mexico at elevations below 3,690 m (12,100 feet). Three subspecies are found in Mexico: peninsularis in Baja California and the lowlands of Sonora and northern Sinola, sparverius in the inland areas of northwest Mexico and Baja California, and tropicalis in southern Mexico. Some populations are migratory, but other populations are year-round residents in their respective territories.

Conservation Status

From a conservation perspective, the American Kestrel is currently considered of Least Concern with stable, widely distributed populations noting that in some regions their populations are in decline. Habitat loss due to urbanization, agriculture, and deforestation poses a significant threat to this species. Additionally, pesticides and insecticides used in agriculture can indirectly harm kestrels by reducing their insect prey populations or causing direct poisoning. Continued monitoring and research are essential to ensure the long-term survival of the American Kestrel.