Wyoming, Yellowstone Park, March 16; Idaho, Neeley, March 24, Meridian, April 9, and Payette Lake, April 17; Montana, Missoula, March 4, Helena, March 12, and Columbia Falls, March 27; Alberta, Onoway, April 13, Carvel, April 15, and Edmonton, April 21; and Mackenzie, Fort Providence, May 2, and Fort Simpson, May 10. Late dates of departure in the spring are: Costa Rica, February 16; Haiti, April 13; Florida, Tallahassee, April 10, Fruitland Park, April 10, Gainesville, April 15, and St. Marks, May 10; Georgia, Cumberland, April 14, and Savannah, April 15; South Carolina, Columbia, April 19, and Charleston, May 1; Chihuahua, Lake Palomas, April 8; Lower California, Colnett, April 8, and Salton River, April 19; and Texas, Kerrville, April 11, Bonham, April 30, and Austin, April 30. _Fall migration._--Early dates of arrival in the fall are: Texas, Tivoli, August 19; Lower California, San Jose del Cabo, August 28; Chihuahua, Janos River, September 5, and Chuechupa, September 19; Sonora, August 19; South Carolina, Frogmore, September 10; Georgia, Savannah, September 15; Florida, St. Marks, September 12; Lesser Antilles, St. Croix, September 24, and Barbadoes, October 11; Porto Rico, Guanica Lagoon, September 29; Costa Rica, October 9; and Panama, Canal Zone, October 7. Late dates of departure in the fall are: Montana, Big Sandy, October 24, and Missoula, December 5; Idaho, Meridian, November 21, and Ketchum, December 20; Wyoming, Sundance, November 25, and Yellowstone Park, December 9; Utah, Provo, November 25; Colorado, Greeley, November 3, and Boulder, December 24; Manitoba, Killarney, October 24, Aweme, November 5, and Margaret, November 10; North Dakota, Chase Lake, October 21, Westhope, November 3, and Marstonmoor, November 3; South Dakota, Harrison, October 24, and Sioux Falls, November 22; Nebraska, Falls City, November 20, Crawford, December 7, and Broken Bow, December 12; Kansas, Independence, December 13; Minnesota, Elk River, November 1, Jackson, November 6, Parkers Prairie, November 7, Fort Snelling, November 13, and Heron Lake, November 14; Wisconsin, Unity, November 3, Madison, November 6, Elkhorn, November 8, Shiocton, November 13, North Freedom, November 14, and Milwaukee, November 15; Iowa, Davenport, November 2, Grinnell, November 4, Hillsboro, November 11, Indianola, November 15, Marshalltown, November 18, Wall Lake, November 28, and Keokuk, November 28; Ontario, Toronto, October 29, Longpoint, November 2, Windsor, November 9, Kingston, November 12, Ottawa, November 17, and Point Pelee, November 21; Michigan, Hillsdale, November 3, Ann Arbor, November 5, Manistee, November 7, Manchester, November 12, Detroit, November 15, and Vicksburg, December 30; Ohio, Scio, November 6, Salem, November 16, Oberlin, November 22, Youngstown, November 21, Sandusky, December 2, and Cleveland, December 29; Indiana, Bloomington, October 24, Bicknell, November 9, and Lyons, November 25; Illinois, Glen Ellyn,