THE BLUE-WINGED WARBLER. 



No. 53. 

 BLUE-WINGED WARBLER. 



A. ( ). I". No. 641. Heltninthophila pinus (Linn.). 



Synonym. — Blue-winged Yellow Warbler. 



Description. — Adult male: Forehead and fore-crown bright yellow with 

 a tinge of orange (Indian yellow) ; sides of head and entire under parts, except 

 crissum, rich lemon yellow ; a black line through eye : wings and tail bluish ash 

 over dusky; tips of middle and greater coverts white, the former with yellowish 

 tinge; three outer pairs of tail-feathers blotched with white on inner webs; re- 

 maining upper parts bright olive-green, clearest and with most yellow on rump; 

 crissum white. Adult female: Similar but with yellow of head restricted to 

 forehead; under parts paler yellow; bill blackish: feet dark brown. Length 

 about 4.75 (120.6); wing 2.37 (60.2); tail [.72 (437); bill .41 (10.4). 



Recognition Marks. — Smaller; yellow on forehead and below; bright "live 



green above; black line through eye; white wing-liars and smaller size as dii 

 tinguished from the Prothonotary Warbler. 



Nest, on the ground, at edge of thicket or blackberry patch, of leaves, grape- 



