490 U. S. NATIONAL MUSEUM BULLETIN 211 



years, April 17); Elizabethton, April 10. Kentucky — Lexington, 

 April 14. Missouri — St. Louis, April 21. Illinois — Chicago region, 

 April 1 (average, May 6); Murphysboro, April 10. Indiana — Rich- 

 mond, April 15. Ohio — central Ohio, April 17 (average, April 30). 

 Michigan — southern Michigan, April 6; Vicksburg, April 26; Saulte 

 Ste. Marie, May 9. Ontario — St. Thomas, April 28; Ottawa, May 13 

 (average of 25 years, May 20). Iowa — Burlington and Keokuk, 

 April 27. Wisconsin — Milwaukee, April 23. Minnesota — Hutchin- 

 son, April 26 (average of 34 years in southern Minnesota, May 11); 

 Stearns County, May 9 (average of 23 years in northern Minnesota, 

 May 18). Texas — Kemah, April 6; San Antonio and Austin, April 12. 

 Kansas — Fort Leavenworth, April 16. Nebraska — Omaha, April 14; 

 Stapleton, April 18. South Dakota — Yankton, May 4; Faulkton, 

 May 7. North Dakota — Fargo, May 16. Manitoba — Treesbank 

 and Reabum, May 3. Saskatchewan — Indian Head, May 22. Colo- 

 rado — Boulder, May 8. 



Late dates of spring departure are: Ecuador — below San Jose, 

 March 13. Panama — Chiriqui, March 26. Costa Rica — El General, 

 April 30. Windward Islands — St. Lucia, May 19. Bermuda — Ireland 

 Island, May 6. Florida — Daytona Beach, May 12. Alabama — Long 

 Island, May 6. Georgia — Atlanta, June 4. South Carolina — 

 Charleston, May 22. North Carolina— Chapel Hill, May 20; Raleigh, 

 May 14 (average 6 years, May 11). Virginia — Naruna, June 11. 

 Maryland — Laurel, May 18 (median of 3 years, May 16). Massa- 

 chusetts — Boston, May 27. Louisiana — Monroe, May 31. Missis- 

 sippi — Oxford, May 24. Kentucky — Bardstown, May 24. Illinois — 

 Chicago, June 1 (average of 16 years, May 26) . Ohio — Buckeye Lake, 

 median, May 23. Texas — Brownsville, May 22; Dallas County, May 

 21. Oklahoma — Tulsa County, May 22. Nebraska — Plattsmouth, 

 June 2; Red Cloud, May 29. North Dakota — Jamestown, June 4. 

 Colorado — Fort Morgan, June 10. 



Early dates of fall arrival are: South Dakota — Faulkton, July 6. 

 Nebraska — Hastings, July 14. Texas— Port Arthur, July 20. Illi- 

 nois — Chicago, September 9 (average of 13 years, September 18). 

 Kentucky — Bowling Green, September 6. Mississippi — Bay St. 

 Louis, August 24. Louisiana — Thibodaux, August 25. Massachu- 

 setts — Nantucket, August 29. Maryland — Laurel, August 17. North 

 Carolina — Raleigh, September 8 (average of 3 years, September 18). 

 Georgia — Young Harris, August 12; Savannah, August 20. Ala- 

 bama — Greensboro, September 18. Florida — Pensacola, September 9 

 (median of 15 years, September 25). Honduras — near Tela, October 

 7. El Salvador — Monte Mayor, October 6. Nicaragua — Rio Escon- 

 dido, September 27. Costa Rica — Bonilla, October 3. 



