290 KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 
Crown, grayish; back and rump, green; underparts, pale yellow; chin, whitish; 
a bufl-white stripe over the eye. (This bird belongs in Section 4, but might be 
mistaken for a warbler by the novice.) 
Philadelphia Vireo. 
Vireo philadelphius. 
See No. 472. 
Crown and sides of head, with more or 
less black; a yellow superciliary stripe ; 
back and rump, olive green. 
Kentucky Warbler. 
Geothlypis formosa. 
See No. 519. 
Underparts, yellowish olive; crown, with partly concealed orange brown 
spot; under tail coverts, greenish yellow. 
Orange=-crowned Warbler. 
Helminthophila celata. 
See No. 492. 
Part 5. The following species have the throat, yellow ; belly, not yellow ; 
tail feathers, marked with more or less white : — 
Back, green, streaked with black; outer web of outer tail feather, not edged with 
white; no yellow stripe over eye; chin, whitish; sides of breast and body, 
streaked. 
Black=poll Warbler. 
Dendroica striata (female). 
See No. 504. 
Crown, black, with patch of orange yellow in centre; back and rump, black, 
with more or less white; throat, orange; sides, streaked with black. 
Blackburnian Warbler. 
Dendroica blackburnie (adult male). 
See No. 505. 
