The Common Raven (Corvus corax) is a large, black bird with a heavy bill and a wedge-shaped tail that is commonly seen at Lake Mead. It is larger than the crows which are not found in the park. Ravens occupy a variety of habitat types. They are intelligent birds, but are sometimes disliked because of their role as an opportunistic feeder and predator. Diet: They feed primarily on carrion, including small rodents, insects, bird eggs and tortoise hatchlings. They have learned that steady food sources are the garbage cans around the Lake Mead area. Therefore we encourage people who use this area to be careful to throw away all of their garbage in sealable cans so it is harder for the ravens to access the garbage. Habitat: They nest on cliffs, ledges, and in trees.