_Winter._--According to Prof. Wells W. Cooke (1912) this sandpiper reaches its winter home in September. Chile seems to be its principal winter home, where it has been taken repeatedly in the high mountains at 10,000 to 12,000 feet and once at over 13,000. DISTRIBUTION _Range._--Northeastern Asia and North and South America; accidental in England. _Breeding range._--North to the northeastern coast of Siberia (probably Koliutschin Island and Cape Serdze Kamen); northern Alaska (Wainwright, Point Barrow, Camden Bay, Barter Island, and Demarcation Point); Yukon (Herschel Island); Mackenzie (Franklin Bay, Baillie Island, and Cambridge Bay); and southern Baffin Island. East to Baffin Island and probably Greenland (Etah). South to Mackenzie (Cambridge Bay, Bernard Harbor, Fort Anderson, and Peel River); and Alaska (Cape Prince of Wales and Point Dall). West to Alaska (Cape Prince of Wales and Point Dall); and northeastern Siberia (probably Koliutschin Island). _Winter range._--North to Chile (Tarapaca); and Argentina (Tucuman, Cordoba, and Buenos Aires). East to Argentina (Buenos Aires). South to Argentina (Buenos Aires); and Chile (Talcahuano). West to Chile (Talcahuano, Huasco, and Tarapaca). _Spring migration._--In spring the Baird sandpiper is practically unknown on the Atlantic coast, the route being up the Mississippi Valley, the plains States, and (to a lesser degree) the Pacific coast. Early dates of arrival are: Missouri, Monteer, March 20, and near Boonville, April 16; Ohio, Painesville, April 25, Oberlin, April 28, and Cleveland, May 8; Michigan, Vicksburg, April 15; Iowa, Sioux City, April 9, Mason City, April 19, and Marshalltown, April 25; Minnesota, Waseca, May 10, and Hutchinson, May 18; Texas, Boerne, March 16, and Electra, April 9; Kansas, Emporia, March 27; Nebraska, Gibbon, March 19, Lincoln, March 23, and Callaway, April 7; South Dakota, Forestburg, April 6, and Brown County, April 18; North Dakota, Jamestown, May 1, and Charlson, May 4; Saskatchewan, Indian Head, May 9, and Orestwynd, May 10; Mackenzie, Fort Resolution, May 19, Fort Simpson, May 20, and Fort Providence, May 26; Arizona, Fort Verde, May 5; Colorado, Loveland, March 29; Wyoming, Cheyenne, April 8, and Laramie, April 23; Montana, Knowlton, May 12, and Bitterroot Valley, May 18; Alberta, Flagstaff, April 16, Alliance, April 24, and Fort Chipewyan, May 24; California, Santa Barbara, April 27; Washington, Dayton, April 11; British Columbia, Chilliwack, April 29, and Okanagan Landing, April 30; and Alaska, Admiralty Island, May 12, Kowak River, May 20, Demarcation Point, May 23, Nulato, May 27, Cape Prince of Wales, May 28, and Point Barrow, May 29.