The Phasianidae are a family of heavy, ground-living birds, which includes pheasants, partridges, junglefowl, chickens, turkeys, Old World quail, and peafowl. The family includes many of the most popular gamebirds. The family is a large one, and is occasionally broken up into two subfamilies, the Phasianinae and the Perdicinae. Sometimes, additional families and birds are treated as part of this family. For example, the American Ornithologists' Union includes the Tetraonidae (grouse), Numididae (guineafowl), and Meleagrididae (turkeys) as subfamilies in Phasianidae.
Description
Phasianids are terrestrial. They range in weight from 43 g (1.5 oz) in the case of the king quail to 6 kg (13 lb) in the case of the Indian peafowl. If turkeys are included, rather than classified as a separate family, then the considerably heavier wild turkey reaches a maximum weight of more than 17 kg (37 lb). Length in this taxonomic family can vary from 12.5 cm (4.9 in) in the king quail up to 300 cm (120 in) (including elongated tail streamers) in green peafowl, thus they beat even the true parrots in length diversity within a family of birds. Generally, sexual dimorphism is seen in size, with males tending to be larger than females.
