BLACKBURNIAN 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 $ 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 $, Fall. Not certainly distinguishable from adult $ 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 (Leaven worth) 

 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. 



