Tiny, short-billed wader with black legs. Nonbreeding adult is finely scalloped grey above with diffuse grey breast sides. When breeding, grey becomes rufous with black feather centres on wings and fine white mantle lines. Throat white. Juvenile plumage similar to adult breeding but less rufous. Mantle lines more prominent, dark-capped with split white supercilia. In flight, thin wing bars and black line on white rump and grey tail.