"The newly formed group of Sierra Nevada bighorn sheep barreled up rugged Olancha Peak last month, the 10 females and four males becoming the first new herd of the endangered animals reintroduced in California in 25 years."
"Once abundant throughout the region's alpine areas, the state's population of Sierra Nevada bighorn had dwindled to two herds by the 1970s. Their numbers have been devastated by disease spread by contact with domestic sheep and goats and unregulated commercial hunting.
The new herd is a success story for the distinct population of Sierra Nevada sheep, which were listed as endangered in 2000. Since 2007, the California Department of Fish and Wildlife has been working to recover the animals by reestablishing herds in areas identified as containing suitable habitat — rugged, steep mountain slopes ranging from 5,000 feet to 14,000 feet in elevation."