23 cm (9") Common. Prairie potholes, marshes, lakes, mudflats.
Robin-sized shorebird with a distinctive spinning while swimming habit. Long needlelike black bill. In flight, no wing-bar, white rump.
Summeer: bold black face-stripe runs down neck turning to reddish brown; underparts white; female has light gray crown, male's is dark.
Winter: grayish unstreaked above, white below, thin grayish line through eye; greenish black legs.
Song: low "wurk".