300 



KEY TO THE BH^DS OF EASTERN NOK I'H AMERICA. 



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

 concealed orange brown patch in centre (wanting in young birds) ; outer 

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

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



Orange=crowned Warbler. 



Hi'lminthophilu cdutn . 

 See N"o. 402. 



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

 primaries, wliitc, forming a small spot oil wing (female). 



Black-throated Blue Warbler. 



Dcndroicxi CKrulescemf. 

 See No. 497. 



Throat, gray ; belly, white (lireast, often washed with yellow) ; crown, yel- 

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



Qolden=winged Warbler. 



Helminthopliihi dirysoptcru . 

 See No. 48S. 



Group 3. Wing, 2.75 to 3.25 inches long. 



515 \ 



Part 1. The following species have the throat, breast, and belly, yel- 



