Range. - North America, chiefly in the interior, breeding along the Arctic coast and about Hudson Bay, and wintering south of the United States.

A very similar species to the preceding, but without the white rump. Their nests are hollows in the ground, generally concealed in a tuft of grass, and lined with grasses and a few leaves. They lay three or four eggs having a grayish colored ground, and marked with different shades of brown, and also with some faint markings of lilac. Size 1.30 x .90. Data. - Peel River, Arctic America, June 18, 1898. Four eggs, taken with the bird by an Indian. Eggs in a slight hollow on the river bank.

White rumped Sandpiper. Baird's Sandpiper Least Sandpiper.

White-rumped Sandpiper. Baird's Sandpiper Least Sandpiper.