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-ckee, 

 the first note higher, and also wee, chi-chi-chi-cki, cbur, ckee-chur* 



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-EATINO WARBLER. 



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



638. SWAINSON'S WARBLER. 

 . Length 4*50 ; crown ashy or forehead yellow. 



a. Forehead yellow. 



a 1 . 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. 



b. Forehead not yellow. 



b 1 . Breast white, crown plain bluish ashy, clearly denned from 

 the bright olive-green back . . . 647. TENNESSEE WARBLER. 

 J 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-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. 



036. BLACK AND WHITE WARBLER. 



/. Back streaked with buft'y and black ; forehead and cheeks black ; 

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

 rather rare . . 660. BAY-BREASTED WARBLER. 



