Previously high-Arctic breeder at Churchill, Manitoba. Mystical mega-rarity. ID: Small but heavy-chested. Thick-necked, pigeon-headed with long wedge-shaped tail (appears pointed) and stubby bill. Ad nonbr: pale-face contrasts with gray neck. Gray underwing. Ad br: black collar on white neck. Underparts often pink. Juv: similar 'M' pattern to LIGU.