Coturnix quail, often called Japanese quail, are small Old World quail native to parts of Europe, North Africa, and Asia, with domesticated Japanese lines used worldwide for eggs and meat. Mature birds usually weigh about 3–5 ounces, with hens often slightly heavier than males. Wild-type birds are mottled brown and buff, while domestic lines include white, golden, tuxedo, silver, rosetta, and many other color varieties. Males often show a rusty or darker throat and breast, while females usually have more speckling. Coturnix quail were introduced into U.S. poultry and research settings during the 20th century and are now widely raised by small farms and hobby breeders.