With a long beak; from
Bill more high than wide, both mandibles broader toward the tip and pitted. First quill longest, second subequal. Tarsus with lower part shielded in front or behind. Hind toe well developed. Anterior toes webbed near base. Remiges twenty. Plumage plain; in summer rufous and in winter grey. Breeds in Arctic regions and migrates to C. and S. America, Europe, Japan, China, India,, and Burma.