230 BULLETIN 126, UNITED STATES NATIONAL MUSEUM. 



Essex County, April 7; Indiana, English Lake, February 27; Iowa, 

 Keokuk, March 4; Minnesota, Heron Lake, March 15; Alberta, 

 Stony Plain, April 19. Average dates of arrival : Pennsylvania, Erie, 

 April 16, Indiana, English Lake, March 11; Iowa, Keokuk, March 

 14; Minnesota, Heron Lake, March 27. Late dates of departure: 

 Florida, Leon County, March 24; Indiana, northern, May 11; 

 Kansas, May 24. 



FaU migration. — Early dates of arrival: Louisiana, Gulf coast, 

 about September 15; Valley of Mexico, September 28; Virginia, 

 Alexandria, October 6. Late dates of departure: Ontario, Ottawa, 

 November 21; Massachusetts, November 23; New York, Brockport, 

 December 10; Pennsylvania, Erie, December 3; Michigan, Hillsdale, 

 November 26; Indiana, English Lake, November 22. 



Casual records. — Accidental in Bermuda (November 13, 1850). 

 Only record for Great Britain is questioned by latest authorities. 

 Has wandered east to Nova Scotia (Sable Island, 1901). 



Egg dates. — Manitoba, Saskatchewan, and Alberta: Thirteen re- 

 cords. May 31 to July 6; seven records, June 7 to 19. Minnesota 

 and North Dakota: Five records, June 1 to 18. 



