WOOD WARBLERS. 341 



/. Forehead yellow, a small black mark in front of the eye ; wings 

 with two white bars ; outer tail-feathers white ; song, swee-chee^ 

 the first note higher, and also wee^ chi-chi-chi-chl^ chhr^ chm-clmr. 



641. Blue-winged Warbler. 

 g. Forehead yellow; crown-cap black; cheeks yellow; wings and 

 tail unmarked ; rather rare .... 685. Wilson's Warbler. 

 2. Throat white or whitish. 



A. Length 5-00 ; crown brown or with blackish and buft'y stripes. 



a. A conspicuous whitish line through the center of the crown, bor- 

 dered by black lines ; not common. 



639. WoRM-EATING WaRBLER. 



h. Crown plain brown; range^ North Carolina and southAvard. 



638. Swainson's Warbler. 



B. Length 4-60 ; crown ashy or foreliead yellow. 

 a. Forehead yellow. 



a>. Breast white, with a barely perceptible tinge of yellow; wing- 

 bars white or yellow, a black mark in front of the eye ; rare. 



641 + 642. Brewster's Warbler. 



h. Forehead not yellow. 



fii. Breast white, crown plain bluish ashy, clearly defined from 



the bright olive-green back . . . 647. Tennessee Warbler. 



52. Breast whitish, tinged with yellow and indistinctly streaked 



with dusky ; crown dull ashy, not clearly defined from the back 



and with a partly concealed patch of rufous-brown ; very rare 



in the Atlantic States north of South Carolina. 



646. Orange-crowned Warbler. 

 II. Throat black, brown, or slate-color. 

 1. Belly white. 

 a. Back blue, a white spot near the outer edge of the wing ; common. 

 654. Black-throated Blue Warbler. 

 h. Back green, cheeks yellow ; song, a buzzlike zee repeated five or 

 six times, the next to last note the highest; common. 



667. Black-throated Green Warbler. 



c. Back grayish, forehead yellow, a black mark through the eye and 

 a white line below it ; a large patch of yellow on the wings ; song, 

 zee-zee-zee-zee, all on the same note ; not common. 



642. Golden-winged Warbler. 



d. Back black ; sides of the breast, middle of the wing, and base of 

 the tail-feathers reddish orange ; movements active, tail frequently 

 spread, the reddish color showing conspicuously ; abundant. 



687. Redstart. 



e. Back streaked with black and white; song fine and wiry; move- 

 ments like those of a Creeper; common. 



636. Black and White Warbler. 



/. Back streaked with'bufty and black; forehead and cheeks black; 



crown-cap, throat, upper part of the breast, and sides chestnut; 



rather rare 660. Bay-breasted Warbler. 



