WOOD WARBLERS. 341 



f. 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 w'ee^ cM-cM-chi-chi^ chur^ cTiee-cJmr. 



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 hufl'y stripes. 



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

 dered by black lines : not common. 



639. Worm-eating Warbler. 



b. Crown plain brown ; range, North Carolina and southward. 



638. Swainson's Warbler. 



B. Length 4-50 ; crown ashy or forehead yellow. 

 a. Forehead yellow. 



a^. Breast white, with a barely perceptilole 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. 



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

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

 &2. 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, 



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

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



667. Black-thkoated 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. 



f. 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. 



