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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 Desert bighorn sheep is the state mammal of Nevada. [51] The Bighorn sheep was featured in the children's book Buford the Little Bighorn (1967) by Bill Peet. The Bighorn sheep named Buford has a huge pair of horns in the Spring, Summer, Fall, and Winter, similar to Rudolph the Red-Nosed Reindeer.
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 in the Kofa National Wildlife Refuge. The Kofa National Wildlife Refuge is located in Arizona in the southwestern United States, northeast of Yuma and southeast of Quartzsite. 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.
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.
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.
Desert woodrat (Neotoma lepida) Muskrat (Ondatra zibethicus) Northern grasshopper mouse (Onychomys leucogaster) Southern grasshopper mouse (Onychomys torridus) Brush mouse (Peromyscus boylii) Canyon mouse (Peromyscus crinitus) Cactus mouse (Peromyscus eremicus) Gambel's deer mouse, (Peromyscus gambelii) Western deer mouse, (Peromyscus sonoriensis)
Ash Canyon and its springs create a lush corridor of vegetation amidst the desert of the San Andres mountains. The San Andres National Wildlife Refuge was created to preserve the desert bighorn sheep which was becoming rare in much of its range. At the time of the creation of the refuge, in 1941, the population of desert bighorn sheep was 33.