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The Rocky Mountain elk was reintroduced in 1913 to Colorado from Wyoming after the near extinction of the regional herds. While overhunting is a significant contributing factor, the elk's near extinction is mainly attributed to human encroachment and destruction of their natural habitats and migratory corridors.
Wolf found over 1,000 miles from home in Colorado, feds say. How remains a mystery Grizzly bear’s historic venture into area of Wyoming has tragic end, officials say
The refuge is home to various animals, including a herd of 150 elk, occasional black bear, mountain lions, and moose; as well as badgers, bats, coyote, two species of owl, mule deer, northern flicker, white pelican, black-tailed prairie dog, and porcupine. The site also contains an estimated 630 plant species.
A cow/calf winter herd is a herd that consists only of female elk and their young. In a normal winter, defined as one where there is a decent amount of snow fall, one study found that when the groups of cows and calves were safe from predation by wolves, about 75.6-83.0% of their diet was made up of graze whereas when wolves were present this number dropped to 61.6-69.4%. [3]
Video shows the intense moment a pack of wolves chases down a herd of more than 300 elk in Yellowstone National Park. The video follows the elk herd as it races away from wolves trailing behind it.
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These lands provided winter range for elk and other ungulates. [4] By the 1970s, the grizzly bear's (Ursus arctos) range in and near the park became the first informal minimum boundary of a theoretical "Greater Yellowstone Ecosystem" that included at least 4,000,000 acres (16,000 km 2). Since then, definitions of the greater ecosystem's size ...
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