California Condors (Gymnogyps californianus) once ranged over much of the Western United States, but by the 1980s they were at the brink of extinction. With our help, their numbers are now rebounding. Condors feed on the carcasses of marine mammals, such as California Sea Lion (Zalophus californianus) and ungulates like Mule Deer (Odocoileus hemionus). Research shows that condors also historically fed on salmon (here - Oncorynchus tshawytscha) and many other animals. To ensure that condors continue to survive and thrive, we must protect both their habitat and their sources of food. That means restoring ungulate herds, salmon runs, and other wildlife populations throughout their range. It also means preventing their exposure to toxins such as lead and rodenticides in the environment.