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The bighorn sheep (Ovis canadensis) [6] is a species of sheep native to North America ... Rocky Mountain bighorn sheep, O. c. canadensis, found from British Columbia ...
Desert bighorn sheep populations have trended upward since the 1960s. The upward trend was caused by conservation measures, including habitat preservation. In 1978, desert bighorn sheep populations were estimated at 8,415-9,040. [15] A state-by-state survey published in 1985 estimated the overall US desert bighorn sheep population at 15,980. [16]
The Sierra Nevada bighorn sheep (Ovis canadensis sierrae) is subspecies of bighorn sheep unique to the Sierra Nevada mountains of California. [3] A 2016 genetics study confirmed significant divergence between the three subspecies of North America's bighorn sheep: Sierra Nevada bighorn sheep, Rocky Mountain bighorn sheep and desert bighorn sheep. [4]
Bighorn sheep get their name from the large horns atop their head, which curve backwards toward the sheep's body. They can weigh between 140-300 pounds and average about 3–3½ feet tall, ...
The refuge, established in 1939 to protect desert bighorn sheep, encompasses over 665,400 acres (2,693 km 2) of the Yuma Desert region of the Sonoran Desert. Broad, gently sloping foothills as well as the sharp, needlepoint peaks of the Kofa Mountains are found in the rugged refuge. The small, widely scattered waterholes attract a surprising ...
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.
Populations of bighorn sheep are at only about 2% to 8% of their sizes at the time of European settlement. Causes for the rapid decline from 1870 through 1950 included unregulated harvesting, excessive grazing of livestock on rangelands, and diseases transmitted by domestic sheep. In recent years, more than 115 translocations were made to ...
Havasu National Wildlife Refuge is a U.S. National Wildlife Refuge on the lower Colorado River in Arizona and California.It preserves habitat for desert bighorn sheep, the endangered southwestern willow flycatcher, and other animals.