300 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Throat and underparts, dull yellowish green; crowu, greeu, with partly 

 concealed orange brown patch in centre i^ wanting in young birds) •, outer 

 tail feathers, narrowly edged with white on inner web ; rest cl tail 

 feathers, without white; no white spot at base of primaries. 



Orange=crowned Warbler. 



Ili'lminlluiphila adaUi . 

 See No. 492. 



Throat and underparts, buffy white; erown and back, olive green ; bases of 

 j)rimaries, wliite, forming a small spot on wing (female). 



Black==throated Blue Warbler. 



fhnilroirn cirriiJpscriis. 

 See No. 497. 



Throat, gray; belly, white (breast, often waslu'd witli yellow) ; crown, yel- 

 lowisli green ; wing coverts, broadly tipped with yellow (female). 



Golden=winged Warbler. 



HelminthophUa chrysoptcra . 

 See No. 4SS. 



Group 3. Wing, 2.75 to 3.25 inches long. 



Part I. The following species have the throat, breast, and belly, yel- 



