The Sespe Condor Sanctuary is a 53,000-acre (210 km2) wildlife refuge in the Topatopa Mountains, in northeastern Ventura County, California.

These captive-bred condors thrived in the wild and have begun to reproduce freely.

[4] Before the sanctuary was established, numerous condors were killed by power line collisions.

They quickly learned to avoid power poles, which has significantly reduced their mortality rate.

With the advent of more natural condor births, more release sites are in the works.