![]() WINTERS: mainly in breeding range, makes irregular invasions of northern coterminous U.S. Birds of prey fall into one of two orders: Falconiformes (including vultures, eagles, condors, falcons, and more) and Strigiformes (incuding owls). Watches for prey from perch, swoops down on it, returns to elevated perch.Īctive any time of day during breeding season hunts mainly during daylight hours in winter.īREEDS: from limit of trees in western and central Alaska to southern Keewatin and Labrador, south to southern British Columbia, central Saskatchewan, northern Minnesota, northern Michigan, and New Brunswick. Also eats other small mammals and insects. Nests in hollow tops of dead spruces, birches, natural tree hollows, abandoned woodpecker holes, deserted nests of crows and birds of prey (Terres 1980).ĭiet often is dominated by voles, but birds (up to grouse size) may comprise the major part of the diet in winter and snowshoe hare juveniles may be important during certain nesting stages (Rohner et al. Open coniferous or mixed forest, forest edge and clearings, old deciduous forest burns, dense shrubby areas (especially tamarack), swamps, scrubby second-growth woodland and muskeg (AOU 1983). Usually on nesting territory by mid-March in northern Alberta.Īgriculture / Pasture/Old Field / Unknownįorest / Conifer Forest - Mesic (average) / Unknownįorest / Conifer Forest - Moist/wet / Unknown Southward irruptive movements generally in year following peak in rodent population. 1987).īasically nonmigratory but retreats slightly in winter from northernmost part of range (National Geographic Society 1983). Home ranges in Europe ranged from 140 to 848 hectares, average 372 hectares (Baekken et al. Population density generally is low (e.g., 4 pairs in 200 sq km in Norway 1 pair per 500 sq km in Sweden) (Johnsgard 1988) maximum of 3 nests per 100 sq km in southwestern Yukon, Canada (Rohner et al. In North America, the peregrine falcon has been known to prey on at least 429 different species of birds and several species of bats and other mammals. Tends to occur in greatest numbers in areas with temporarily high prey populations may move long distances in response to changes in prey abundance. Both parents tend young, which fledge in 25-35 days, independent in about 3 months. Incubation lasts about 25-30 days, by female. Clutch size is up to 13 (mean brood size was 6.3 in Fennoscandia, 3.7 in Yukon, 5.5 in Alaska). ![]() Įgg dates: late April to mid-June in Alaska and arctic Canada April-early June in Alberta. American Ornithologists' Union, Washington, D.C. BC Conservation Data Centre: Species SummaryĪmerican Ornithologists' Union (AOU).
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