_Winter Range._--North to California (San Francisco Bay, Owens Lake, and Salton Sea); rarely Arizona (Mellen); Texas (Lomita and Decatur); rarely Louisiana (Vermilion Bay); Alabama (Dauphin Island); and rarely North Carolina (Pea Island). East to rarely North Carolina (Pea Island); South Carolina (near Charleston); Georgia (Savannah, Darien, and St. Marys); the Bahama Islands (Abaco, New Providence, San Salvador, Acklin, and Great Inagua Islands); probably the Lesser Antilles (St. Christopher); French Guiana (Cayenne); and Brazil (Para, Pernambuco, and Bahia). South to Brazil (Bahia and Cuyaba); and Peru (Chorillos and Tumbez). West to Peru (Tumbez); Ecuador (Santa Elena); the Galapagos Islands (Indefatigable Island); Costa Rica (La Estrella de Cartago and Puntarenas); Honduras (Chamelicon); Guatemala (Lake Atitlan and Chiapam); Jalisco (Zapotlan, La Barca, and Guadalajara); Sinaloa (Mazatlan); Lower California (San Jose del Cabo and Carmen Island); and California (Santa Barbara and San Francisco Bay). _Spring migration._--Early dates of arrival are: Virginia, Back Bay, April 18; District of Columbia, Washington, April 19; Maryland, Cambridge, May 1; Pennsylvania, Mercer County, April 18, Butler, April 27, Cataract, May 2, Erie, May 8, and Pittsburgh, May 9; New Jersey, Cape May, April 4, Caldwell, April 7, Princeton, April 30, and Camden, May 4; New York, Orient, April 21, New York City, April 25, Auburn, April 29, Canandaigua, May 4, and Rochester, May 9; Connecticut, Saybrook, May 3, and New Haven, May 8; Massachusetts, Woods Hole, April 23, Ipswich, April 24, Rehoboth, April 29, and Monomoy Island, May 6; Vermont, St. Johnsbury, May 6; Maine, Saco, May 5; Quebec, Quebec City, April 28, and Godbout, May 12; Nova Scotia, Halifax, April 20; Kentucky, Bowling Green, April 23, and Lexington, May 7; Missouri, Courtenay, April 1, Corning, April 5, and Independence, April 15; Illinois, De Kalb, April 6, Rantoul, April 9, and Milford, April 13; Indiana, Jeffersonville, April 5, Richmond, April 21, and Fort Wayne, April 22; Ohio, New Bremen, April 19, Painesville, April 30, and Oberlin, May 5; Michigan, Vicksburg, April 30, Battle Creek, May 3, and Detroit, May 4; Ontario, Listowel, May 3, Toronto, May 4, Hamilton, May 8, and Ottawa, May 10; Iowa, Marshalltown, April 25, Emmetsburg, April 27, and Forest City, April 30; Wisconsin, Beloit, April 18, Whitewater, April 28, and Madison, May 7; Minnesota, Lake Wilson, April 18, Heron Lake, April 24, and Waseca, April 30; Kansas, McPherson, April 9, Lawrence, April 24, and Wichita, April 28; Nebraska, Lincoln, March 21, Valentine, April 6, and Alda, April 10; South Dakota, Huron, April 8, Vermilion, April 20, and Pitrodie, April 22; North Dakota, Stump Lake, April 28, Jamestown, May 1, and Grafton, May 3; Manitoba, Gimli, May 6, and Shoal Lake, May 15; Saskatchewan, Orestwynd, May 7, Indian Head, May 12, and Dinsmore, May 14; Mackenzie, Fort Providence, May 15, Fort Simpson, May 17, and