JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 251 



Throat and sides, chestnut; crown, 

 chestnut. 



Dendroica castanea (adult male ) . 

 Bay-breasted Warbler. 

 See No. 317. 



Throat and sides, more or less marked with chestnut ; crown, olive 

 green, streaked with black; back, grayish olive, streaked with black; 

 (crow r n, with indications of chestnut); belly, cream white. 



Dendroica castanea (female}. 

 Bay-breasted Warbler. 

 See No. 317. 



Throat and under parts, cream white, shading into pale buff; white 

 on flanks; crown and back, green, indistinctly streaked with black; 

 wing bars, white. Dendroica castanea (immature}. 



Bay-breasted Warbler. 



See No. 317. 



Throat and under parts, pale yellowish white; crown and back, 

 green, indistinctly streaked; wing bars, white; often very difficult 

 to distinguish from immature specimen of D. castanea. 



Dendroica striata (immature } . 

 Black-poll Warbler. 

 See No. 318. 



Throat and under parts, white ; ashy 

 on the sides; crown, slaty gray; back, 

 green; under tail coverts, white. 



Vermivora peregrina (adult male } . 

 Tennessee Warbler. 

 See No. 308. 



Throat and under parts, white; wing bars, yellow; crown, and 

 back, bright green. Dendroica pensylvanica (immature}. 



Chestnut-sided Warbler. 

 See No. 316. 



