a grouse, Pedioecetes phasianellus, of prairies and open forests of western North America, similar in size to the prairie chicken but with a more pointed tail.
pin·tail (pĭn'tāl') n.
pl.pintail or pin·tails A duck (Anas acuta) of the Northern Hemisphere, having gray, brown, and white plumage and a sharply pointed tail. Also called sprigtail.
ruddy duck n. A North American duck (Oxyura jamaicensis) having stiff pointed tail feathers and, in the male, brownish-red upper plumage and a black-and-white head. Also called sprigtail.