40 



BLACK AND WHITE WARBLER 



Spring Migration. — A few Black and White Warblers winter in 

 southern Florida, so that the only way of knowing the beginnings 

 of spring migration in that district is from the records of the striking 

 of the birds at the lighthouses. Both at Alligator Reef and at Som- 

 brero Key lighthouses in southern Florida, this species begins to 

 strike early in March. Thence, northward the progress is so slow — 

 an average of twenty miles per day — that it is the middle of May 

 before the species has reached the Gulf of St. Lawrence. 



PI<ACE 



Atlantic Coast — 



Northern Florida 



Atlanta, Ga. (near) 



Frogmore, S. C. (near) 



Raleigh, N. C. (near) 



Asheville, N. C. (near) 



French Creek, W. Va 



Washington, D. C 



Beaver, Pa 



Renovo, Pa 



Germantown, Pa 



Englewood, N. J 



Southeastern New York 



Central Connecticut 



Eastern Massachusetts 



Providence, R. I 



Southern New Hampshire 



Southern Maine 



Montreal, Can 



Quebec, Can 



St. John, N. B 



North River, Prince Edward Isl 



Mississippi Valley — 



New Orleans, La 



Helena, Ark 



Eubank, Ky 



Brookville, Ind 



Waterloo, Ind 



Oberlin, Ohio 



Detroit, Mich 



Petersburg, Mich 



Listowel, Ont 



Parry Sound District, Ont 



Ottawa, Ont 



Southeastern Iowa 



Chicago, 111 



Southern Wisconsin 



Lanesboro, Minn 



Elk River, Minn 



Aweme, Manitoba 



Fort McMurry, Athabasca 



Fort Chippewyan, Athabasca 



Fort Simpson, Mackenzie 



