176 



BLACKBURN IAN WARBLER 



Adult ?, Spring. — Similar to young <$ in Fall but orange averaging deeper 

 in color and more evident in crown; belly whiter. 



Adult $, Fall.— Similar to adult 5 in Spring but orange areas still paler, 

 crown spot barely evident, upperparts browner, belly more suffused the breast 

 color being less sharply defined posteriorly. 



Young 2, Fall. — Not certainly distinguishable from adult 2 in Fall but 

 breast averaging paler, in some specimens nearly white; white in tail much 

 reduced, the base of the outer web of the outer tail-feather rarely fuscous like 

 the end. 



Nestling. — Above brown the back streaked with black and margined with 

 buffy; a broad buffy white line from the eye to the nape; below white, the 

 throat and breast suffused with buff and brownish, the latter with blackish 

 spots extending to the sides. 



General Distribution. — Eastern North America; north to the Gulf 

 of St. Lawrence and Manitoba ; west to the Plains. 



Summer Range. — Southern Canada from Cape Breton, through 

 central Ontario to Manitoba and south to Massachusetts (Berkshire, 

 Greenfield, Holyoke, Chester, Winchendon, Roxbury, Concord, Lexing- 

 ton and Sudbury), northwestern Connecticut (probably), New York 

 (Lewis and Oneida Counties), northern Michigan (Porcupine Moun- 

 tains), Wisconsin (Jefferson and Manitowoc Counties) and northern 

 Minnesota. In the Allegheny Mountains a few Blackburnian Warblers 

 breed in Pennsylvania and south to North Carolina. It occurs west to 

 the plains of eastern Texas (Boerne), eastern Kansas (Leavenworth) 

 and eastern Nebraska (West Point, Omaha) ; accidental in Utah 

 (Ogden, September 1871) and New Mexico (Fort Bayard, May). 



Winter Range. — Central Mexico to Venezuela and Peru; casual 

 in the West Indies. 



Spring Migration.- — 



