The Greater Roadrunner (Geococcyx californianus) is a long-legged bird in the Cuckoo family, Cuculidae, from Southwestern United States and Mexico. The Latin name means "Californian earth-Cuckoo". Along with the Lesser Roadrunner, it is one of two species in the Roadrunner genus Geococcyx. This Roadrunner is also known as the Chaparral Cock, Ground Cuckoo, and Snake Killer.