CANADA WARBLER 



281 



Young <$, Fall. Similar to adult (5* in Fall but crown greenish without 

 black, lores dusky, no black malar stripe, yellow duller, breast spots dusky and 

 not sharply denned. Not certainly distinguishable from adult $ in Fall. 



Adult ?, Spring. Similar to adult <S in Spring but duller throughout, crown 

 gray tinged with yellowish, especially on forehead, and without black, lores 

 dusky, no black malar stripe; breast spots dusky and not sharply denned. 



Adult ?, Fall. Similar to adult $ in Spring but slightly greener above. 



Young ?, Fall. Not certainly distinguishable from adult ? in Fall but 

 averaging browner above especially on crown, and with the breast spots fainter. 



Nestling. Resembles nestling of Wilsonia pusilla. 



General Distribution. Eastern North America; north to New- 

 foundland and Athabasca; west to the Plains. 



Summer Range. Breeding principally in Canada, a few nest in 

 the northern United States south to Massachusetts (Berkshire, Bristol, 

 Brookline, Templeton, and Wellesley), Rhode Island (Noyes Beach, 

 Johnston), northwestern Connecticut, central New York (Oneida 

 County), southern Ontario (Ottawa, Kingston, London, Toronto, 

 Guelph), central Michigan, northeastern Illinois, central Minnesota 

 (St. Louis, Lake and Cass counties) ; in the Allegheny Mountains, it 

 breeds south to North Carolina and occurs from 3,000 feet nearly to 

 the top of the highest peaks. 



The great bulk of the species passes along the Atlantic coast and 

 westward to and including the valley of the Ohio. In the interior the 

 bird is a rare migrant from eastern Texas (San Antonio, Gainesville), 

 eastern Kansas (Neosho River), eastern Nebraska (Richardson 

 County, May 1875), through the valley of the Red River of the 

 North to Manitoba. Accidental in central Texas (Concho), southern 

 New Mexico (Fort Thorn), and eastern Colorado (Lake, May 23, 

 1899). 



Winter Range. Guatemala to Peru. 



Spring Migration. 



