Long-legged, long-billed shorebird. Often found with dowitchers or yellowlegs in muddy, marshy pools. Breeds in Arctic tundra. Breeding adults are barred black and white, with white eyebrows and rufous cheeks. Nonbreeding birds are pale gray with whitish bellies and white eyebrows. Juveniles have scaly wings and buffier tones on the neck and head. At all times, note dull, yellowish-green legs and long, droopy bill. In flight, note white rump.