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The bighorn sheep (Ovis canadensis) [6] is a species of sheep native to North America. [7] It is named for its large horns.A pair of horns may weigh up to 14 kg (30 lb); [8] the sheep typically weigh up to 143 kg (315 lb). [9]
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]
The Texas Parks and Wildlife Department is working to restore populations of the native desert bighorn sheep and will release some in Franklin Mountains this fall.
Only 39% of the 115 bighorn sheep translocations are persisting in 6 Rocky Mountain states. Populations of 100 or more sheep now occur in 10 national park units, populations of 100-200 sheep in 5 units, and populations of more than 500 sheep in 5 units. Populations of fewer than 100 animals exist in 5 other park units. [1]
The Bighorn sheep population has increased over the last couple years to a total of 233. [37] Endangered species. Whooping crane. Black-footed ferret.
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.
The population of desert bighorn sheep was recently estimated to be 428. [6] They live mainly in the two ranges that dominate the refuge landscape – the Kofa Mountains and Castle Dome Mountains of northern Yuma County and southern La Paz County. These mountains are not especially high, but they are extremely rugged and rise sharply from the ...