In an effort to protect the condor, the use of projectiles containing lead has been banned for hunting deer, wild pig, elk, pronghorn antelope, coyotes, ground squirrels, and other non-game wildlife in areas of California designated as its range. The bald eagle has similarly been shown to be affected by lead originating from dead or wounded waterfowl—the requirement to protect this species was one of the biggest factors behind laws being introduced in 1991 by the United States Fish and Wildlife Service to ban lead shot in migratory waterfowl hunting.