A Survey of Raptors in Northern Utah, 1976-79
Journal
Raptor Research
Volume
16
Issue
1 (Spring)
Year
1982
Pages
4-10
Section
Scientific Papers
Online Text
Abstract
A roadside survey of raptors was conducted in Cache Valley, Utah during 3 (1976-77, 1977-78, and 1978-79) non-nesting seasons (November to mid-April). The Rough-legged Hawk (Buteo lagopus) was most numerous, followed in abundance by the Red-tailed Hawk (Buteo jamaicensis), Marsh Hawk (Circus cyaneus) and American Kestrel (Falco sparverius). Thirteen other species of raptors were observed. Male Kestrels were 2 to 3 times more abundant than females in December through March. Light phase individuals were 3 to 5 times more numerous than dark phase birds among Red-tailed Hawks and Rough-legged Hawks.
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