Galliformes is an order of heavy-bodied ground-feeding birds that includes 
1/ Grouse and ptarmigans - Family Tetraonidae
2/ Turkeys - Family Meleagrididae
3/ Pheasants, quail, and partridges - Family Phasianidae
4/ Chachalacas - Family Cracidae

galliformes derives from "gallus", Latin for "rooster".