The cliff buzzard was a large, black-feathered bird of the mountains. It built its nest on inaccessible cliffs. Often several pairs would nest in the same area, behavior more typical of the corvidae (crowlike birds) than of the raptors (hawks and so on). Cliff buzzards exhibited a great deal of intelligence (for birds) and would cooperate in hunting. They would band together to mob some large creature and drive it over a cliff so that they might all feast together on the shattered body. Any wounded creature, no matter what its size, might be subject to the unwanted attentions of the cliff buzzards. They were most common on the southern slopes of the White Mountains.