Other Names: none
Distribution: Arctic regions in summer; Antarctica in winter.
Size: 33-39 cm in length with a 66-77 cm wingspan.
Plumage: Mainly gray and white, with a white forehead, a black neck and crown (streaked with white), and white cheeks. The wing mantle is gray, and the shoulders are fringed brown, some tipped with white. The upper wing is gray with a white edge, and the collar and rump are both white. The deeply forked tail is off-white, with gray outer webs. The back of the head is black. The eyes are black and the beak and legs are bright red.