=508. Bullock Oriole= (_Icterus bullocki_). L. 7.5. _Ad._ [Male]. _Cheeks_, most of underparts, forehead and line over eye orange; rump and outer tail-feathers yellower; center of throat, crown, foreback and middle tail-feathers black; a large white wing-patch. _Ad._ [Female]. Above olive grayish brown; below yellowish, belly whiter; tail olive-yellow; wings blackish, median coverts tipped, greater coverts externally margined with white; chin sometimes blackish. _Yng._ [Male]. Like [Female], but center of throat and lores black. _Notes._ See No. 507.
Range.--Western North America, from Mexico north to Assiniboia and British Columbia; east to western Texas; west to the Pacific; winters in Mexico.
=637. Prothonotary Warbler= (_Protonotaria citrea_). L. 5.5. Tail-feathers with large white areas. _Ad._ [Male]. Whole head and underparts orange-yellow; back greenish yellow; rump gray. _Ad._ [Female]. Crown greenish like back; yellow paler; belly whitish; less white in tail. _Notes._ Call, a sharp, metallic _chink_; song, a "high pitched, penetrating and startling" "_peet_, _tsweet_, _tsweet_, _tsweet_, _tsweet_, _tsweet_." (Jones.)
Range.--Eastern North America; breeds from the Gulf States north to Virginia, Ohio, and southern Minnesota; winters in the tropics.
=651. Olive Warbler= (_Dendroica olivacea_). L. 5.2. _Ad._ [Male]. Head and breast orange brown, a black band through the eye; back olive-gray; belly grayish; wing-bars white; outer tail-feathers largely white. _Ad._ [Female]. Above olive-gray, head yellower; eye-band dusky; breast yellow; belly white. _Notes._ Song, a liquid _quirt quirt_, _quirt_, in a descending scale. (Price.)
Range.--Highlands of Guatemala and Mexico north to mountains of Arizona and New Mexico.
=662. Blackburnian Warbler= (_Dendroica blackburniæ_). L. 5.2. _Ad._ [Male]. Throat, line over eye, center of crown, and sides of neck bright orange; back black with a few whitish streaks; wing-bars broadly white; tail-spots white. _Ad._ [Female]. Yellow areas paler; above grayish streaked with blackish. _Yng. and Ad. in Winter._ Similar to Ad. [Male], but throat paler, back browner; wing with two distinct bars. _Notes._ Song, _wee-see-wee-see, tsee-tsee_, _tsee_, _tsee-tsee_, _tsee_, _tsee_, in an ascending scale, the last shrill and fine.