A Car Survey of Raptors in Southeastern Idaho 1974-1976
A car survey of raptors was conducted over a 187 km route in southeastern Idaho during the non-nesting seasons from November 1974 to May 1976. The American Rough-legged Hawk (Buteo lagopus) was most numerous, followed in abundance by the American Kestrel (Falco sparverius) and the Golden Eagle (Aquila chrysaetos). Perched raptors were commonly on the tops of power poles. The Marsh Hawk (Circus cyaneus), the American Rough-legged Hawk, and the American Kestrel were most numerous in agricultural lands while the Prairie Falcon (Falco mexicanus) and the Golden Eagle were seen most often in the mouths of river valleys around native vegetation.