The grey-headed chachalaca (Ortalis cinereiceps) is a member of an ancient group of birds in the family Cracidae, which includes chachalacas, guans, and curassows. It is found from Honduras to Colombia.
Taxonomy and systematics
The family Cracidae is closely related to the guineafowl (Numididae), the pheasants, grouse and allies (Phasianidae), and the New World quail (Odontophoridae). It is monotypic; several subspecies have been proposed and not accepted.