JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 253 



Throat and under parts, buffy white ; crown and back, olive green ; 

 bases of primaries, white, forming a small spot on wing (female). 



Dendroica c&rulescens. 

 Black-throated Blue Warbler. 

 See No. 312. 



Throat, gray; belly, white (breast, often washed with yellow); 

 crown, yellowish green; wing coverts, broadly tipped with yellow 

 (female). Vermivora chrysoptera. 



Golden-winged Warbler. 



See No. 305. 



GROUP 3. Wing, 2.75 to 3.25 inches long. 



PART 1. The following species have the throat, breast, and belly, 



yellow; the breast, more or less streaked; some tail feathers, 



marked with white : 



Under parts, pale yellow; sides of breast, more or less streaked 

 with black; under tail coverts, white; crown, grayish; back and 

 rump, ashy gray, streaked with black. Dendroica kirtlandii. 



Kirtland's Warbler. 



See No. 322. 



Tail of Blackburnian Warbler. 



Throat and breast, orange, belly, pale yellow; sides of breast, 

 streaked with black; crown, black, with orange spot in center; back, 

 black, streaked with whitish; rump, black; under tail coverts, white. 



Dendroica blackburnj,ce . 



Blackburnian Warbler. 



See No. 319. 



Under parts, very pale yellowish, almost yellowish white, faintly 

 streaked with black; under tail coverts, white; crown, back, and 

 rump, olive green, streaked with black. Dendroica striata (female}. 



Black-poll Warbler. 

 See No. 318. 



