an Asian and European partridge (Alectoris chukar), with red bill and feet, chestnut-colored above and white or gray below: successfully introduced into W U.S.
See chukar in American Heritage Dictionary 4
(chə-kärˈ)
noun
A Eurasian partridge (Alectoris chukar) with grayish-brown plumage and red legs and bill, introduced into western North America as a game bird.