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Antelope Island holds populations of pronghorn, bighorn sheep, American bison, porcupine, badger, coyote, bobcat, mule deer, and millions of waterfowl. The bison were introduced to the island in 1893, and the Antelope Island bison herd has proven to be a valuable genetic pool for bison breeding and conservation purposes.
Antelope Island has large areas of dry grass prairie and this provides a nearly optimum environment for bison. [15] Other mammals found on the island include coyotes, bobcats, mule deer (estimated to number 250), pronghorn antelope (approximately 200 on the island), and bighorn sheep (estimated 200).
Though not an antelope, it is known colloquially in North America as the American antelope, prong buck, pronghorn antelope and prairie antelope, [5] because it closely resembles the antelopes of the Old World and fills a similar ecological niche due to parallel evolution. [6] It is the only surviving member of the family Antilocapridae. [7]
Hart Mountain National Antelope Refuge is a National Wildlife Refuge on Hart Mountain in southeastern Oregon, which protects more than 422 square miles (1,090 km 2) and more than 300 species of wildlife, including pronghorn, bighorn sheep, mule deer, sage grouse, and Great Basin redband trout.
Bighorn sheep inhabit alpine meadows, grassy mountain slopes, and foothill country near rugged, rocky cliffs and bluffs. [8] Since bighorn sheep cannot move through deep snow, they prefer drier slopes, where the annual snowfall is less than about 150 cm (60 in) per year. [8] A bighorn's winter range usually has lower elevations than its summer ...
There are only approximately 80,000 North American bighorn sheep on the continent currently — much less than the between 150,000 and 200,000 that existed before the 1800’s.
American bison Belding's ground squirrel Black-tailed jackrabbit Desert bighorn sheep Cliff chipmunk Elk North American porcupine Spotted bat Western spotted skunk. Abert's squirrel (Sciurus aberti) [207] Allen's big-eared bat (Idionycteris phyllotis) [208] American badger (Taxidea taxus) [209] American bison (Bos bison or Bison bison) [210]
The "Sheep eaters", a band of Shoshone people, lived year-round in Yellowstone until 1880. Their principal food was bighorn sheep and they made their bows from sheep horns. By 1900, during an "epoch of relentless destruction by the skin hunters", bighorn numbers were reduced to a few hundred in the United States.