Raptor migration counts indicate that numbers are stable or slightly declining in e. Numbers can be expected to decline in areas where this patchwork is replaced by large expanses of either unbroken woodland or treeless landscape, but may be expected to increase where currently unbroken forests are fragmented by large-scale mechanical disturbance, insect infestation, and/or wildfire. Both practices tend to encourage a patchwork of woodland and large open areas favored by Red-tails. Expansion was closely related to deforestation in the east and fire suppression in grasslands and shrub-steppe environments in the west. Red-tailed Hawk distribution, Saskatchewan. Geographical ecology of the common species of Buteo and Parabuteo wintering in North America. The evolution of diversity in avian territorial systems. North America, and Swainson's and Ferruginous hawks in regions of the Great Plains ( Brown 1964aīrown, J. Paper read at Raptors at Risk, Johannesburg, South Africa, 4–11 August 1998.ĭuring the 20th century, the Red-tailed Hawk expanded its range and largely replaced the Red-shouldered Hawk in much of e. Nest sites of five raptor species along an urban gradient. Presence of tall trees or other structures may provide a sufficient level of security for Red-tails to tolerate human activities ( Mannan et al. Landscape features of red-tailed hawk nesting habitat in an urban/suburban environment. Journal of the Colorado Field Ornithologists 34 (1):32-40. The effects of urbanization on raptors along the Front Range of Colorado.
New York, NY: Vintage Departures, Vintage Books, Random Haouse, Inc. Urban, suburban and rural Red-tailed Hawk nesting habitat and populations in southeast Wisconsin. Abundance of diurnal raptors on open space grasslands in an urbanized landscape. Journal of Field Ornithology 64:433-439.īerry, M. Nesting of Red-tailed Hawks and Great Horned Owls in a central New York urban/suburban area. Additional successful nesting of a Red-tailed Hawk in an urban subdivision. The successful nesting of a Red-tailed Hawk ( Buteo jamaicensis) in an urban subdivision. Contrary to some other large raptors, Red-tailed Hawks are able to thrive in the open, patchily wooded landscapes created by urban and exurban sprawl of human communities, if adequate prey are available ( Valentine 1978 NatureServe Explorer: an online encyclopedia of life. Nuttall Ornithological Club, Cambridge, MA, and American Ornithologists' Union, Washington, DC, USA. In State of North America's Birds of Prey (K. Conservation status of North America's birds of prey. Global and North American populations are considered secure ( Farmer et al. Species names in all available languages Species names in all available languages Language
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