The national bird of Mexico, this large falcon occurs in open, arid brushlands, pastures, and deserts. It feeds largely on carrion, especially along roads where mammals and birds killed by vehicles are often available. Given the opportunity, it will also feed on fish, eggs, reptiles, and insects. It often uses its long legs to run after prey as well as dig into the soil. Its huge nest is made of sticks and placed high in an isolated tree or saguaro cactus.