Two distinct populations exist in North America. The northern range includes southern Alaska and extreme northwest British Columbia. The southern range extends from south, central British Columbia down through Washington, Oregon and California east of the Cascade and Sierra Nevada mountain ranges. Eastward from British Columbia, the range includes southern Alberta, Saskatchewan, Manitoba, and southwest Ontario. In the United States, the range continues through Idaho, Montana, Nevada, Utah and Colorado into the western Dakotas, Kansas and Nebraska. Climate rather than food availability limits the range of this species. High temperatures and humidity restrict the magpie's range in the Midwest. Generally, magpies are not a migratory species.
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