120 



THE BLUE-WINGED WARBLER. 



No. 53- 



BLUE-WINGED WARBLER. 



A. O. U. No. 641. Helminthophila 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 \vith 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 1.72 (43.7) ; bill .41 (10.4). 



THE BLUE-WINGED WARBLER'S DOMAIN. 



Photo by the Autht 



Recognition Marks. Smaller ; yellow on forehead and below; bright olive- 

 green above; black line through eye; white wing-bars and smaller size as dis- 

 tinguished from the Prothonotary Warbler. 



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



