Sespe Condor Sanctuary
The 53,000-acre (210 km2) Condor Sanctuary was created in 1947. The Sespe Condor Sanctuary is closed to the public to protect the endangered California condor. On January 14, 1992, two captive bred California Condors and two Andean Condors were released into the Sespe Condor Sanctuary, overlooking the Sespe Creek, near Fillmore, California. This was done by the U.S. Fish and Wildlife Service's Hopper Mountain National Wildlife Refuge Complex, the lead office for the California Condor Recovery Program. These captive bred condors thrived in the wild and have begun to reproduce freely. (Source:U.S. Fish and Wildlife Service)
Prior to the Sanctuary, numerous condors were killed by power line collisions. In order to circumvent this mishap, the captive condors were treated with "mock power poles" through the power pole aversion program. These poles emitted mild shocks when landed upon. They quickly learned to avoid power poles, which has significantly reduced their mortality rate.
Currently the California Condor Recovery Program is in effect in California, Arizona, and Baja. There are more than 350 California condors in the world, with more than 180 flying free in the wild. California has four release sites, of which the Sespe Condor Sanctuary is one. With the advent of more natural condor births, more release sites are in the works.