Dike 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: 
breast and sides, faintly tinged with yellow ; no wing bars. 
Warbling Vireo. 
Vireo gilvus. 
See No. 473. 
First primary, short, but longer than in V, 
gilvus; lores and eye ring, yellow 3 back, 
olive; wing coverts, edged with white. 
White-eyed Vireo. 
Vireo noveboracensis, and races. 
See No. 478. 
First primary, not short; lores and eye ring, dull white; underparts, washed 
with very pale greenish yellow ; no wing bars. 
Philadelphia Vireo. 
Vireo philadelphicus. 
See No. 472. 
