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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]
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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.
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.
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 refuge is in the Upper Sonoran life zone characterized by semi-desert vegetation and grassland. One hundred and seventy two species of birds, including 5 species of hummingbirds, have been seen on the refuge. Large mammals include mule deer, mountain lion, desert bighorn sheep, black bear, and the introduced oryx. [2]
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