Common raven (Corvus corax) populations in the deserts of Southern California are both increasing and causing conflicts with conservation of other wildlife. Ravens take advantage of food resources that are more abundant around people than in natural desert environments. They also readily use human-made structures such as billboards and power poles for nesting. Because of these anthropogenic resources, raven populations have increased in these desert environments. They are also predators of rare and declining wildlife, including the federally threatened population of desert tortoise (Gopherus agassizii) in the Mojave Desert.