BANK SWALLOW 423 



Arizona (Fort Lowell and Tucson) ; and southern California (Ocean- 

 side). The western limits extend north along the Pacific coast from 

 southern California (Oceanside and Huntington Beach) to Puget 

 Sound, Wash. (Smith Island) ; thence through the interior of British 

 Columbia (Ashcroft, Pack River, Klappan River, and Atlin) ; south- 

 M^estern Yukon (Lake Marsh and Fifty-mile River) ; and Alaska 

 (Lake Aleknagik, Bethel, Iditarod, and Kobuk Delta). 



Winter range. — From available information it appears that in 

 winter the bank swallows of the Western Hemisphere are concen- 

 trated in central South America. Most of the winter stations are 

 for Brazil (Joazeiro, Tapirapoan, and Caicara), but it also has been 

 recorded at this season from Bolivia (Chilon), and northern Peru 

 (Nauta). A specimen was taken at Cali, Colombia, on February 6, 

 1912; one was obtained at Encontrados, Venezuela, on February 13, 

 1908 ; and one was collected on March 2, 1925, at Concepcion, Tucu- 

 man Province, Argentina. One found dead in a house at Yquitos, 

 Peru, in June 1936 had been banded (C30270) on June 12, 1932, at 

 Clear Lake, Ind. 



Spring migration. — Early dates of spring arrival are: Florida — 

 St. Petersburg, April 10. Georgia — Macon, April 13. Virginia — 

 Variety Mills, April 11. District of Columbia — Washington, April 

 4. Pennsylvania — Philadelphia, April 8. New Jersey — Mahwah, 

 April 3. New York — New York City, April 10. Comiecticut— 

 Hartford, April 17. Massachusetts — Boston, April 28. Vermont — 

 St. Johnsbury, April 19. Maine — Lewiston, April 18. New Bruns- 

 wick — Grand Manan, April 27. Quebec — Montreal, May 6. Louisi- 

 ana — New Orleans, February 16. Arkansas — Helena, March 26. 

 Tennessee — Nashville, March 31. Missouri — Fayette, April 8. Illi- 

 nois — Joliet, April 15. Indiana — Bloomington, April 6. Ohio — 

 Oberlin, April 6. Michigan — Detroit, April 11. Ontario — Ottawa, 

 April 17. Iowa — Iowa City, April 5. Wisconsin — Madison, April 

 12. Minnesota — Minneapolis, April 9. Manitoba — Aweme, April 28. 

 Kansas — Topeka, April 10. Nebraska — ^Lincoln, April 13. South 

 Dakota — Yankton, April 21. North Dakota — Larimore, April 28. 

 Saskatchewan — Indian Head, April 27. Arizona — Tucson, April 5. 

 Colorado — Durango, April 8. Wyoming — Laramie, April 23. 

 Montana — Fortine, April 18. Alberta — Alliance, May 1. Califor- 

 nia — Santa Barbara, April 8. Oregon — Yamhill County, April 3. 

 Washington — Clallam Bay, April 1. British Columbia — West Sum- 

 merland, April 24. Alaska, Fairbanks, May 14. 



Fall migration. — Late dates of fall departure are : Alaska — Kobuk 

 River, August 19. British Columbia — Okanagan Landing, Septem- 

 ber 27. Oregon — Harney County, September 12. Alberta — Belve- 

 dere, August 19. Montana — Fdiiine, September 14. Wyoming — 

 Laramie, September 4. Colorado — Denver, September 12. Saskatch- 



