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The white-tailed ptarmigan was introduced into the Sierra Nevada of California and Uinta Mountains of Utah in the 1970s. It may have been native here during the early Pleistocene but became locally extinct due to climate changes with greater snow-cover in spring impacting on its breeding season.
Accipitridae is a family of birds of prey which includes hawks, eagles, kites, and harriers. These birds have very large powerful hooked beaks for tearing flesh from their prey, strong legs, powerful talons, and keen eyesight. Seventeen species have been recorded in Utah. White-tailed kite, Elanus leucurus (A) Golden eagle, Aquila chrysaetos
Egg of a Lagopus. The four species are all sedentary specialists of cold regions. Willow ptarmigan is a circumpolar boreal forest species, white-tailed ptarmigan is a North American alpine bird, and rock ptarmigan breeds in both Arctic and mountain habitats across Eurasia and North America.
A gray wolf pack has been observed at the eastern end of the range, in Moffat County, Colorado. Raptors include bald and golden eagles, turkey vultures, various hawks and harriers, and owls including the great horned owl, great grey owl, and barn owls. Other notable large birds include the sage grouse and white-tailed ptarmigan.
White-tailed ptarmigan; Prairie falcon; Black oystercatcher; Black turnstone; Surfbird; Heermann's gull; Spotted owl; Flammulated owl; Northern pygmy owl; Anna's hummingbird; Lewis's woodpecker; Williamson's sapsucker; Red-breasted sapsucker; Red-naped sapsucker; Nuttall's woodpecker; White-headed woodpecker; Gray vireo; Pinyon jay; California ...
Rock ptarmigan; W. White-tailed ptarmigan; Willow ptarmigan This page was last edited on 2 August 2021, at 00:30 (UTC). Text is available under the Creative ...
White-tailed ptarmigan in Alberta. White-tailed ptarmigans have been monitored in Rocky Mountain National Park, Colorado, since 1966. Short-term population cycles are well documented in populations that are not hunted but not in populations outside the park, which are hunted.
White-tailed ptarmigan. Order: Galliformes Family: Phasianidae. Phasianidae consists of the pheasants and their allies. These are terrestrial species, variable in size but generally plump with broad and relatively short wings. Many species are gamebirds or have been domesticated as a food source for humans. Wild turkey, Meleagris gallopavo