Blue-black all over; female lighter and streaked with grayish-white below; often nests in bird houses; twittering song. [Tree Swallow.] [Chimney Swift.]
82. YELLOW-BREASTED CHAT. 7-1/4 in.
(Icteria virens. 683.)
Olive-green; bright yellow below, belly white; region about eye black, marked with a white line above eye; white spot and shorter line below eye; the largest warbler; remarkable song. [Dickcissel.] [Western Yellow-Throat.] [Yellow-Throated Vireo.]
83. BLACK-THROATED BLUE WARBLER. 5-1/4 in.
(Dendroica cærulescens. 654.)
Slaty-blue; below white, with black throat and sides; conspicuous white patch on wing; female grayish, no black, but may be recognized by wing patch; hoarse note, “kree, kree.” [Blue-gray Gnatcatcher.]
84. NASHVILLE WARBLER. 4-3/4 in.
(Helminthophila rubricapilla. 645.)
Olive-green; head and neck bluish gray; indistinct brown patch on crown; bright yellow below; no wing bars; white eye ring; song, not loud, “wee´-see, wee´-see, wit´-a-wit´-a-wit´.” [Tennessee Warbler.]