The Harris hawk is a medium sized raptor found in the southwestern United States, Mexico, Central America and parts of South America. Most of the Harris hawk's habitat is dry and desolate, so they have adapted some behaviors that are not typical to other raptors. Since their is not typically a lot of prey in their habitat, they eat primarily mammals, Harris hawks hunt in packs, like wolves or lions. Often one or two birds will chase the prey to where others are waiting in ambush. These packs usually consist of a family group of 2 to 5 birds. Since there are not many trees in many parts of their habitat Harris Hawks will often stack, with one bird perched upon the back of another.