298 KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 
Throat and sides, chestnut; crown, chestnut. 
Bay-breasted Warbler. 
Dendroica castanea (adult). 
See No. 503. 
Throat and sides, more or less marked with chestnut; crown, olive green, 
streaked with black; back, grayish olive, streaked with black; (crown, with 
indications of chestnut;) belly, cream white. 
Bay-breasted Warbler. 
Dendroica castanea (female). 
See No. 503. 
Throat and underparts, cream white, shading into pale buff; white on flanks ; 
crown ard back, green, indistinctly streaked with black; wing bars, white. 
Bay=breasted Warbler. 
Dendroica castanea (immature). 
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 (inamature). 
See No. 502. 
