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Red-tailed hawk
 | This article may be too long to read and navigate comfortably. When this tag was added, its readable prose size was 19,000 words. (January 2024) |
| Red-tailed hawk | |
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| Red-tailed hawk call | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Accipitriformes |
| Family: | Accipitridae |
| Genus: | Buteo |
| Species: | B. jamaicensis
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| Binomial name | |
| Buteo jamaicensis (Gmelin, 1788)
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Breeding Year-round Nonbreeding
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| Synonyms | |
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Buteo borealis | |
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 within the genus of Buteo in North America or worldwide.[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] The bird is sometimes also referred to as the red-tail for short, when the meaning is clear in context.
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 (from small meadows to the treed fringes of more extensive prairies), 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. Generally 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, and in the west of North America, red-tails are particularly 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 of an immense diversity of families and species. Prey that is terrestrial and at least partially diurnal is preferred, so types such as ground squirrels are preferred where they naturally occur.[9] Over much of the range, smallish rodents such as voles alternated with larger rabbits and hares often collectively form the bulk of the diet. Large numbers of birds and reptiles can occur in the diet in several areas, and can even be the primary foods.
Meanwhile, amphibians, fish and invertebrates can seem rare in the hawk's regular diet, but they are not infrequently taken by immature hawks. Red-tailed hawks may survive on islands absent of native mammals on diets variously including invertebrates such as crabs, as well as lizards or birds. 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]
- ^ BirdLife International (2016). "Buteo jamaicensis". IUCN Red List of Threatened Species. 2016: e.T22695933A93534834. doi:10.2305/IUCN.UK.2016-3.RLTS.T22695933A93534834.en.
- ^ "Buteo jamaicensis". NatureServe Explorer. Retrieved 18 July 2024.
- ^ a b Ferguson-Lees, J.; Christie, D. (2001). Raptors of the World. London: Christopher Helm. ISBN 978-0-7136-8026-3.
- ^ "Red-tailed Hawk". All About Birds. Cornell University. Retrieved 16 May 2011.
- ^ Preston, C. R. (2000). Red-tailed Hawk. Stackpole Books.
- ^ a b Palmer, R. S., ed. (1988). Handbook of North American birds. Volume 5 Diurnal Raptors (part 2).
- ^ Maxwell, Terry C. (2013). Wildlife of the Concho Valley. Texas A&M University Press. p. 148. ISBN 978-1-62349-006-5.
- ^ "Red-tailed Hawk". Encyclopedia of Life. Retrieved 21 March 2012.
- ^ Schmutz, J.K.; Schmutz, S.M.; Boag, D.A. (1 June 1980). "Coexistence of three species of hawks (Buteo spp.) in the prairie–parkland ecotone". Canadian Journal of Zoology. 58 (6). Canadian Science Publishing: 1075–1089. doi:10.1139/z80-151. ISSN 0008-4301. PMID 7427802.
- ^ Preston, C. R. and R. D. Beane. (2009). "Red-tailed Hawk (Buteo jamaicensis), The Birds of North America. doi:10.2173/bna.52.
- ^ Beebe, F. L. (1976). North American Falconry and Hunting Hawks. Hancock House Books (British Columbia).
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