1182 U.S. NATIONAL MUSEUM BULLETIN 23 7 fart 2 



Quebec — Montreal area, April 15. New Brunswick — St. Andrews, 

 March 23; Summerville, March 28. Newfoundland — Tompkins, 

 May 15. Arkansas — Little Rock, February 23; Fayetteville, March 

 12. Tennessee — Athens, March 2 (average of 6 years, March 12) ; 

 Nashville, March 3 (median of 11 years, March 9). Missouri — St. 

 Louis, March 25 (median of 15 years, April 13). Illinois — Urbana, 

 March 8 (median of 20 years, March 23) ; Chicago, April 5 (average 

 of 16 years, April 20). Indiana — Wayne County, March 16 (median 

 of 18 years, April 6). Ohio — central Ohio, March 11 (median of 

 40 years, March 31). Michigan — Detroit area, March 6 (median of 

 10 years, March 28) ; Battle Creek, March 25 (median of 59 years, 

 April 12). Ontario — Ottawa, April 12 (average of 21 years, April 20). 

 Iowa — Sioux City, April 3 (average of 32 years, April 18). Minne- 

 sota — Minneapolis-St. Paul, April 6 (mean of 15 years, April 21). 

 Kansas — northeastern Kansas, March 6 (median of 20 years, April 23). 

 South Dakota — Sioux Falls, May 7 (average of 3 years. May 12). 

 North Dakota — Jamestown, April 25; Cass County, April 28 (average, 

 April 30). Manitoba — Treesbank, May 2 (average of 15 years. 

 May 7). New Mexico — Los Alamos, April 4 (median of 8 years, 

 April 19). Wyoming — Torrington, AprU 19 (average of 9 years, 

 April 28). Idaho — Moscow, April 11 (median of 11 years, April 25). 

 Montana — Columbia Falls, April 26; Libby, April 28 (median of 

 10 years. May 3). Washington — Everson, April 1 (median of 9 years, 

 April 19). 



Late dates of spring departure are: Florida — Daytona Beach, 

 May 13. Alabama — Baldwin County, May 1. Georgia — Grady 

 County, May 4. Maryland — Laurel, May 4. Illinois — Chicago, 

 June 1 (average of 16 years, May 21). Ohio — Buckeye Lake, median, 

 May 8. 



Early dates of fall arrival are: Ohio — Buckeye Lake, median, 

 September 10. Illinois — Chicago, average of 16 years, September 20. 

 New York — Tiana, September 5. Maryland — Laurel, September 14. 

 Georgia — Grady County, October 20. Alabama — Dauphin Island, 

 October 11. Florida — Tallahassee, October 6; Orlando, October 15. 



Late dates of fall departure are: Washington — Pullman, October 2. 

 Montana — Columbia Falls, October 7. Idaho — Lewiston, October 16 

 (median of 11 years, October 9). Wyoming — Laramie, October 18 

 (average of 6 years, October 10). Utah — Salt Lake City, November 

 20. New Mexico — Los Alamos, October 26 (median of 8 years, 

 October 10). Manitoba — Treesbank, October 4 (average of 14 

 years, September 22). North Dakota — Cass County, October 1 

 (average, September 20). Kansas — northeastern Kansas, November 

 15 (median of 11 years, October 20). Minnesota — MinneapoHs-St. 

 Paul, October 8 (mean of 7 years, October 1). Iowa — Sioux City, 



