Head often furnished with crests or nude skin, or lappets and wattles. Tail of 8, 10, 14, 16, 18, 20, to 24 feathers, much developed. Nostrils never hidden by feathers. Legs partially or wholly naked, and often armed with spurs. Toes always naked and not pectinated. Hind toe raised. Frequent forests and thick cover. Roost on trees. This family is here divided into five subfamilies, viz. Turkeys, Guinea Fowls, Pheasants and Jungle-Fowl, Old World Partridges and Quails, and American Partridges and Quails.