Other Names: none
Distribution: northeast Siberia in summer; Southeast Asia and Australia in winter.
Size: 23-25 cm in length.
Plumage: Both sexes have unpatterned gray wings and back, and a scaly breast pattern extending onto the belly while in breeding plumage. The upper parts, underwings, face and neck are gray to black, and the underside and eyebrow stripe are both white. They have short yellow legs and a bill with a pale base and dark tip. The eyes are black with white eyelids.