272 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Group 2. Wing, 2.37 to 2.75 inches long. 



First primary, very short; lores and eye ring, whitish; throat, whitish : 

 l>rr:t-i ami -iili--. faintly tinged with yellow; no wing liars. 



Warbling Vireo. 



See No. 473. 





First primary, short, but longer than in V. 

 gilvus; lores and eye ring, yellow ; back, 

 olive,; win-; coverts, edged with white. 



White=-eyed Vireo. 



]'//' a inii'i Ixifiii'i //>/>, mid f<ii'i.-i. 

 Sec No. 17s. 



First primary, not short ; lores and eye ring, dull white ; umlT|>art 8, w:i-hil 



with VITV i)al<- -jn-i-iii-li vt-lliiw; no wing bars. 



Philadelphia Vireo. 



Vir> jJiHinJi' 

 See Xo. 472. 



