![]() Wildlife biologists were awed and excited by the sighting of a lone wolverine in California in 20, but nonetheless the risks posed by climate change indicate that the future is challenging for wolverines in the lower 48 states. It is not believed to be part of a resident population, possibly having come from somewhere in the Rocky Mountains. In 20, one wolverine was recorded on motion-detector cameras in the northern Sierra Nevada mountains. It is estimated that 25 to 300 live in the lower 48 states. In the lower 48, they live primarily at high altitudes with alpine vegetation, but can venture to lower elevations. Home ranges can vary from 100 to 600 square miles. The wolverine ranges widely, up to 15 miles a day, and needs lots of habitat. ![]() The wolverine also resides in Alaska, Canada, and Russia. Wolverine populations are currently known in the North Cascades Range in Washington the Northern Rockies of Montana, Idaho, Wyoming and a small portion of Oregon (Wallowa Range). Historically the wolverine was in the Sierra Nevada mountains of California and the southern Rocky Mountains in Colorado, Wyoming, and New Mexico.
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