Jan., 1909. Birds of Illinois and Wisconsin — Cory. 243 



Under parts, faintly washed with yellow, or yellowish white; crown, 

 grayish olive; back and rump, olive green; under tail coverts, white; 



no yellow on tail feathers. Vermivora peregrina (female in fall). 



Tennessee Warbler. 

 See No. 308. 



Crown, back, and rump, yellowish green; major part of inner webs 

 of tail feathers, yellow. Dendroica cestiva {female ) . 



Yellow Warbler. 



See No. 311. 



Sides of head, yellowish; crown, glossy 

 black (male ) ; crown, bright olive green, 

 like back (female); back and rump, bright 

 olive green ; under tail coverts, yellow. 



Wilsonia pusilla. 

 Wilson's Warbler. 

 See No. 335. 



Crown, grayish; back and rump, dull olive green; entire under 

 parts, yellow, palest on throat; no yellow on tail feathers; chin, not 

 whitish; no bufE-white stripe over eye. 



Oporornis Philadelphia {young female ) . 

 Mourning Warbler. 

 See No. 331. 



Crown, grayish; back and rump, green; under parts, pale yellow; 

 chin, whitish; a buff- white stripe over the eye. (This bird belongs 

 in Section 4, but might be mistaken for a warbler by the novice. ) 



Vireosyhia philadelphica. 



Philadelphia Vireo. 



See No. 294. 



Crown and sides of head, with more 

 or less black ; a yellow superciliary stripe ; 



back and rump, olive green. 



Oporornis formasa. 

 Kentucky Warbler. 



See No. 329. 



Under parts, yellowish olive ; crown, with partly concealed orange 

 brown spot; under tail coverts, greenish yellow. Vermivora celata. 



Orange-crowned Warbler. 



See No. 307. 



