KEY TO BIRDS IN THE FIELD 359 



P. Cap black ; back olive-yellow ; under parts yellow shading to olive 



on the sides Wilson's Warbler, p. 94. 



P. Sides streaked with black; white line over the eye ; two white wing 



bars ; ' belly white Yellow- throated Warbler, p. 8(1. 



P. Back olive-green, changing to gray on the head and neck ; wing and 



tail brownish ; no wing bars Nashville Warbler, p. 79. 



P. Back olive-green; wings slaty-blue ; forehead and all under parts 



bright yellow ; a dark line through eye . . . Blue-winged Warbler, p. 78. 



Q. Slender brown bird, with long tail of sharp-pointed feathers used 



in climbing ; belly white Brown Creeper, p. 03. 



Q. Slender bird, with the whole plumage streaked black and white. . . 



Black and White Warbler, p. 7(j. 



Q. Short-tailed birds creeping with the head downward as often us 

 upward. (R.) 

 R. Lower breast and belly reddish-brown. Red-breasted Nuthatch, p. 59. 



R. Top of head dark brown Brown-headed Nuthatch, p. 09. 



S. Very small bird, seen hovering over flowers. Hummingbird, p. 100. 



S. Larger bird, with mouse-colored back and white belly 



Rough-winged Swallow, p. 107. Bank Swallow, p. 107. 



S. Steel-blue-backed, long-winged bird, with reddish rump 



Cliff Swallow, p. 105. 



S. The flycatchers are so frequently seen on the wing after insects, 

 that they might be looked for here ; they sit on a, twig, with 

 depressed tail and quivering wings, till an insect is seen, when they 

 dart out, and after catching their prey, return to the same perch . . . 

 Least Flycatcher, p. 105. 



Key to Birds about the Size of the English Sparrow 



The numbers refer to the pages where the birds are described. 



* Birds seen mainly on the wing. The feet of these birds are small and 



weak ; when at rest they perch on slender things, such as telegraph 

 wires. (W.) 



* Birds seen creeping along trunks and larger branches of trees. (V.) 



* Birds neither constantly on the wing nor creeping on tree trunks. (A.) 

 A. Birds with a cons['icuous amount of bright yellow, but no red. (P.) 

 A. Birds with rich orannc or flame color, but no lemon-yellow. (0.) 

 A. Stout-billed birds, with more or less of distinct red in the 



plumage. (N.) 

 A. Birds blue in color. — Including breast. . . .Indigo Bunting, p. i;?9. 



— Breast brown Bluebird, p. ■"i.'i. 



A. Birds with none of the above bright colors (yellow, ^ 



flame, red, or blue) in conspicuous amounts. (B.) /^C 



B. Crested.^loud-voiced, gray bird . .Tufted Titmouse, p. 61. J» \ 

 B. Stout-billed birds, without crest. (F.) '^ i 



B. Slender-billed birds, without crest. (C.) 2 



