Red-tailed hawk

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Red-tailed hawk
Red-tailed hawk call
Conservation status
Least Concern  (IUCN 3.1)[1]
Secure  (NatureServe)[2]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Accipitriformes
Family:	Accipitridae
Genus:	Buteo
Species:	B. jamaicensis
Binomial name
Buteo jamaicensis (Gmelin, 1788)
Breeding   Year-round   Nonbreeding
Synonyms
Buteo borealis Buteo borealis (lapsus) Falco borealis Gmelin Falco harlani Audubon

The red-tailed hawk (Buteo jamaicensis) is a bird of prey that breeds throughout most of North America, from the interior of Alaska and northern Canada to as far south as Panama and the West Indies. It is one of the most common members of the genus Buteo.^[3] The red-tailed hawk is one of three species colloquially known in the United States as the "chickenhawk", though it rarely preys on standard-sized chickens.^[4]

Red-tailed hawks can acclimate to all the biomes within their range, occurring on the edges of non-ideal habitats such as dense forests and sandy deserts.^[5] The red-tailed hawk occupies a wide range of habitats and altitudes, including deserts, grasslands, coniferous and deciduous forests, agricultural fields, and urban areas. Its latitudinal limits fall around the tree line in the subarctic and it is absent from the high Arctic. It favors varied habitats with open woodland, woodland edge and open terrain. It is legally protected in Canada, Mexico, and the United States by the Migratory Bird Treaty Act.

The 14 recognized subspecies vary in appearance and range, varying most often in color. In the west of North America, red-tails are often strongly polymorphic, with individuals ranging from almost white to nearly all black.^[6] The subspecies Harlan's hawk (B. j. harlani) is sometimes considered a separate species (B. harlani).^[7] The red-tailed hawk is one of the largest members of the genus Buteo, typically weighing from 690 to 1,600 g (1.5 to 3.5 lb) and measuring 45–65 cm (18–26 in) in length, with a wingspan from 110–141 cm (3 ft 7 in – 4 ft 8 in). This species displays sexual dimorphism in size, with females averaging about 25% heavier than males.^[3][8] The diet of red-tailed hawks is highly variable and reflects their status as opportunistic generalists, but in North America, they are most often predators of small mammals such as rodents; prey that is terrestrial and at least partially diurnal is preferred.^[9] Like many Buteo species, they most often hunt from a perch, but they can vary their hunting techniques where prey and habitat demand it.^[6][10]

Because they are so common and easily trained as capable hunters, in the United States they are the most commonly captured hawks for falconry. Falconers are permitted to take only passage hawks (which have left the nest, are on their own, but are less than a year old) so as to not affect the breeding population. Passage red-tailed hawks are also preferred by falconers because they have not yet developed the adult behaviors that would make them more difficult to train.^[11]