KEY TO BIBDS IN THE FIELD 357 



C. Plain, clay-colored bird, with no conspicuous streaks, but with a 



white line over the eye Clay-colored Sparrow, p. 131. 



C. Olive-green-backed birds which are generally seen deliberately 

 searching on leaf and twig for insects. (D.) 



D. Lower parts yellowish ; no wing bars Philadelphia Vireo, p. 98. 



D. Lower parts white ; two distinct wing bars ; ^ eyes white 



White-eyed Vireo, p. 100. 



E. Tail notched," and with some yellowish at the base of the blackish 



feathers ; wing also with some yellow Pine Siskin, p. 119. 



E. Tail notched ; ^ crown chestnut ; forehead blackish ; a whitish line 



over the eye Chipping Sparrow, p. 130. 



E. Tail not notched, usually rounded, ^ of narrow, sharp-pointed tail 

 feathers.' Grasshopper Sp., p. 124. Henslow's Sp., p. 125. 



Sharp-tailed Sp., p. 126. 



F. Head with a distinct black cap ; back ashy 



Chickadee, p. 61. Carolina Chickadee, p. 62. 



F. Crown dull brownish ; extreme northern 



Hudsonian Chickadee, p. 62. 



G. Tail very short ; under parts brown like the back, but lighter 



Winter Wren, p. 68. 



G. Tail longer ; under parts grayish ; back dark brown, without 



streaks.. House Wren, p. 68. 



G. Upper parts dark cinnamon-brown ; a distinct white line over the 

 eye ; tail with the outer feathers black, and the central ones 



barred i Bewick's Wren, p. 67. 



G. Back streaked lengthwise with white or white and black 



Short-billed Marsh Wren, p. 69. Long-billed Marsh Wren, p. 69. 

 H. Olive-green birds, seen flitting near the tips of twigs and bushes ; 



under parts yellowish-gray ; crown usually with a bright spot 



Golden-crowned Kinglet, p. 56. Ruby-crowned Kinglet, p. 57. 



H. Slender, grayish bird, with a long tail. .Blue-gray Gnatcatcher, p. 67. 



I. Whole plumage blue Indigo Bunting, p. 139. 



I. Southern bird, with bright blue, green, and red in the plumage. . . . 



Painted Bunting, p. 139. 



I. Slaty-blue-backed birds. (J.) 

 J. Throat and sides black ; lower breast and belly white, a distinct white 



wing patch Black-throated Blue Warbler, p. 82. 



J. Throat and belly white ; sides streaked with black ; two white wing 



bars 2 Cerulean Warbler, p. 84. 



K. With much flame color at base of tail and middle of wing ; upper 

 parts black ; belly about white American Redstart, p. 96. 



