Rocky Mountain Bighorn Sheep, Kootenay National Park, British Columbia, Canada

Rocky Mountain Bighorn Sheep (Ovis canadensis canadensis), Kootenay National Park, British Columbia, Canada. Wild sheep crossed the Bering land bridge from Siberia during the Pleistocene (about 750,000 years ago) and spread across western North America as far south as Baja California and northwestern Mexico. Genetic divergence from their closest Asian ancestor (snow sheep) occurred about 600,000 years ago. This is part of the Canadian Rocky Mountain Parks World Heritage Site declared by UNESCO in 1984.

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Filename: 01CAN-09-23-Rocky-Mountain-Bighorn-Sheep.jpg
Copyright: © Tom Dempsey / PhotoSeek.com
Image Size: 2787x2140 / 2.0MB; http://www.photoseek.com/; Animalia British Columbia Canada Canadian Rockies Canadian Rocky Mountains JasperBanffYohoKootenay Kootenay National Park Mammalia North America animal mammals vertebrate animal
Contained in galleries: CANADA: Jasper, Banff, Yoho, Kootenay: Rockies

Rocky Mountain Bighorn Sheep (Ovis canadensis canadensis), Kootenay National Park, British Columbia, Canada. Wild sheep crossed the Bering land bridge from Siberia during the Pleistocene (about 750,000 years ago) and spread across western North America as far south as Baja California and northwestern Mexico. Genetic divergence from their closest Asian ancestor (snow sheep) occurred about 600,000 years ago. This is part of the Canadian Rocky Mountain Parks World Heritage Site declared by UNESCO in 1984.