An American wild bison buffalo, its head crusted with ice and snow, looks up at a human visitor to wintry Yellowstone Park while foraging for food in deep snow in Wyoming, March 2, 1979. (AP Photo/Gary Guisinger)
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An American wild bison buffalo, its head crusted with ice and snow, looks up at a human visitor to wintry Yellowstone Park while foraging for food in deep snow in Wyoming, March 2, 1979. (AP Photo/Gary Guisinger)
See these photos on AP Images.com
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