292 KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 
Part 6. The following species have the throat not yellow; belly, 
yellow, and no white on the tail feathers : — 
Throat, grayish or brownish; eye ring, 
white; back, olive green. 
Connecticut Warbler. 
Geothlypis agilis. 
See No. 520. 
Throat, grayish or ashy, changing to black 
in adult male birds; no white eye ring. 
Mourning Warbler. 
Geothlypis philadelphia. 
See No. 521. 
Part 7. The following species have the throat not yellow; belly 
yellow, and more or less white on tail feathers : — 
Upper throat, chestnut; breast, streaked 
with black; back, greenish; rump, yellow; 
much white on wing coverts. 
Cape May Warbler. 
Dendroica tigrina (adult male). 
See No. 495. 
