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KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Part 9. The following species have no yellow on throat or belly, and 

 no white on the tail feathers : 



Wing, less than 2.25 ; underparts, whitish, tinged with olive on sides ; throat, with 

 faint wash of yellowish buff, almost white; crown, dull olive; tail, entirely 

 olive green. 



Maryland Yellowthroat. 



Geothlypis trichas (young bird in fait) . 

 See No. 522. 



Wing, over 2.25 ; entire underparts, whitish or slightly olive ; crown, slaty ; back, 

 green ; no yellow or orange on tail feathers. 



Tennessee Warbler. 



Helminthophila peregrina. 

 See No. 493. 



Entire uuderparts, dull olive or olive green; crown, with partially concealed 

 patch of orange brown (sometimes wanting) ; no yellow or orange on tail 

 feathers. 



Orange-crowned Warbler. 



Helminthophila celata. 

 See No. 462. 



End of tail, brown; basal portion of tail 

 feathers, reddish orange (male), or pale 

 yellow (female) ; more or less black bristles 



at base of bill. 



Redstart. 



Setophaga rusticilla. 

 See No. 528. 



Part 10. The following species have no yellow on the throat or belly, 

 and more or less white on the tail feathers : 



Wing coverts, broadly edged with yellow; crown, greenish yellow; back, 

 tinged with slate color ; tail feathers, marked with white to the tips of inner 



webs. 



Golden-winged Warbler. 



Helminthophila chrysoptera. 

 See No. 488. 



Wing coverts, not yellow; crown, grayish or greenish; back, yellowish 

 green ; some tail feathers, narrowly edged with white near tips of inner webs. 



Tennessee Warbler. 



Helminthophila peregrina. 

 See No. 493. 



