Breeding range.—The breeding range of the Aleutian sandpiper extends north to eastern Siberia (Emma Harbor) and Alaska (Cape Prince of Wales). East to Alaska (Cape Prince of Wales, Colville River, and Port Moller); and the Shumagin Islands. South to the Shumagin Islands; the western part of the Alaskan Peninsula (Muller Bay and Morzhovia Bay); and the Aleutian Islands (Unalaska, Atka, Tanaga, Kiska, Agutta, and Attu Islands). West to the Aleutian Islands (Attu) and eastern Siberia (Emma Harbor). The species also has been detected in summer at St. Lawrence and St. Matthew Islands and at other points on the mainland of Alaska (Point Dall, Pastolik, St. Michael, Nulato, and Port Clarence).
Winter range.—Resident throughout much of its range, but also south in winter, along the Alaskan and British Columbian coasts and as far as Washington (Destruction Island).
Migration.—The migrations performed by the Aleutian sandpiper are very limited. In the vicinity of St. Michael, Alaska, flocks will appear as early as August 15, occasionally remaining until October 15. They have been noted on the Asiatic side of Bering Sea at Providence Bay in June, at East Cape in July, at Plover Bay in September, and on Bering Island as late as October 24.
Spring migrants have been observed to reach Point Etolin, Alaska, as early as April 8 and Bering Island April 24. Spring departures from the southern part of the winter range have been noted as late as: Destruction Island, May 1; Forrester Island, May 7; and Admiralty Island, May 14. An early fall arrival at Craig, Alaska, is August 6 and at Destruction Island October 1.
Casual records.—This species has been collected or observed outside of its known normal range on a few occasions: Washington, Point Chehalis, November 6, 1917, and Dungeness Spit, March 4, 1916; Oregon, Cape Meares, December 31, 1912, and March 18, 1913; these may prove to be regular winter resorts.
Egg dates.—Alaska: 18 records, June 3 to July 24; 9 records, June 15 to 22.
PISOBIA ACUMINATA (Horsfield)
SHARP-TAILED SANDPIPER
HABITS
This is a bird which few of us have been privileged to see. From its summer home in northeastern Siberia it migrates south to Japan, the Malay Archipelago, Australia, and New Zealand. On the fall migration it visits the coast of northwestern Alaska frequently, perhaps regularly, and often commonly. It occurs regularly, sometimes abundantly, on the Pribilof Islands in the fall. In southern Alaska and farther south it occurs only as a rare straggler. A. W. Anthony (1922) took a young male near San Diego, California, on September 16, 1921.