298 



KEY TO THE BIKUS OF EASTERN NORTH AMERICA. 



Thioiit iind sides, chestTiut; orown, chestnut. 



Bay=breasted Warbler. 



Dendroica cuManen ((uhtlt). 

 See No. 503. 



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

 streaked with black; back, grayish olive, streaked with black; (crown, with 

 indications of chestnut ;) belly, cream white. 



Bay=breasted Warbler. 



Dendroica castariea (female). 

 See No. 503. 



Throat and underparts, cream white, shading into pale buff"; white on flanks; 

 crown and back, green, indistinctly streaked with black; wing bars, white. 



Bay=breasted Warbler. 



Dendroica castanea {immaturi') . 

 See No. 503. 



Throat and underparts, pale yellowish white ; crown and back, green, indis- 

 tinctly streaked; wing bars, white; often very difficult to distinguish from 

 immature specimen of D. castanea. 



Black=poll Warbler. 



Dendroica striata (immature). 

 See No. 504. 



Throat and underparts, white; ashy on the 

 sides ; crown, slaty gray ; back, green ; 

 under tail coverts, white. 



Tennessee Warbler. 



Helminthophila peregrina (adult male) . 

 See No. 493. 



Throat and underparts, white ; wing bars, yellow ; crown and back, bright 

 green. 



Chestnut=sided Warbler. 



Dendroica pennsylvanica (immature). 

 See No. 502. 



