The family Phasianidae, within the order Galliformes, comprises terrestrial birds commonly known as pheasants, partridges, quails, and junglefowl, including domestic chickens. These birds are generally plump, with strong legs and short, rounded wings adapted for short bursts of flight rather than long-distance travel. They are primarily ground-dwelling and feed on seeds, insects, and small invertebrates. Many species exhibit striking sexual dimorphism, with males displaying bright plumage and elaborate courtship behaviors to attract females. Phasianids are found across much of the world, especially in Asia, Europe, and North America, and they play important roles in both natural ecosystems and human agriculture as game birds and domesticated species.