18-20 cm (7-8") Common and widespread. Small lakes, rivers, streams, shores, beaches.
Small, sparrow-sized shorebird. Constantly teeters up and down. Circles out over water on stiff wings. Mostly solitary.
Summer: barred, olive-brown upperparts, dark spots on white underparts; dark eyeline and white eyebrow; orange-pink bill.
Winter: plain grayish above, pure white below; dark bill.
Song: "shrill "pee-weet" call; whistled "wheet" in flight.