136 BIRDS OF ILLINOIS. 



B. Inner webs of lateral tail-feathers with patch or distinct edging of white. 



a. Wing without light markings, except a white spot at base of primaries (sometimes 

 obsolete in ). 



2. D. cserulescens. t: Above plain dark dull blue; sides of head and neck, throat, and 

 sides, black; belly white, s: Above dull grayish green, below dull pale greenish 

 buff. 



Z>. Wing with one or two distinct bands across coverts. 



3. D. virens. t: Above bright olive-green; wing with two white bands; sides of head 

 gamboge- yellow; chin, throat, jugulum and sides of breast, deep black; belly 

 whit*. : Similar, but black of throat, etc.. broken by admixture of yellow and 

 whitish. Young in fall and winter: Throat, etc., mostly pale yellowish. 



4. D. striata. Crissum pure white at all stages and seasons. : Plleum uniform 

 deep black; upper parts grayish, streaked with black, the wings with two white 

 bands; lower parts pure white, the sides of the throat with a series of blended 

 black streaks, uniting 9n chin, s: Above dull olive-green, everywhere streaked 

 with black; beneath whitish, more or less tinged anteriorly with greenish buff, the 

 sides (and sometimes sides of throat) streaked with dusky. Young in fall and 

 winter: Above olive-green, more or less streaked, especially on hack, with dusky; 

 beneath pale olive-yellowish, the crissum, however, always pure white. 



5. D. castanea. Crissum always pale creamy buff. 3: Crown, throat and entire 

 sides chestnut, darkest on the first; above grayish, streaked with black, the wing 

 with two white bands; sides of neck and whole belly pale buff, or buffy white, s: 

 Somewhat similar, but chestnut wanting, or merely indicated, the crown streaked 

 like the back. Young in fall and winter: Similar to corresponding stage of 

 striata, but crissum pale buff, the upper tail-coverts and tall tinged with bluish 

 gray; flanks sometimes (in males chiefly) tinged with chestnut. 



6. D. pennsylvanica. Wing-bands sulphur-yellow; throat pure white; crown yellow 

 or grass-green; auriculars white or light gray, i: Sides, continuously, rich chest- 

 nut, connecting anteriorly with a black cheek-patch; crown bright yellow; back 

 streaked with black and greenish yellow, s: Similar to the s, but duller. Young 

 in fall and winter: Above nearly plain bright olive-green, including whole top of 

 head; side of head ash-gray; lower parts plain whita, more grayish laterally, 

 where sometimes tinged with chestnut on the flanks. 



7. D. caerulea. &: Above flue grayish blue, with black streaks on back and along sides 

 of crown; wing-bands pure white; lower parts pure white, interrupted by a gray- 

 ish blue jugular band or collar. ?: Above grayish green, glossed with blue; 

 beneath light greenish buff, without jugular collar. Young t: Similar to adult ?, 

 but whiter beneath, and upper parts more glossed with blue. 



8. D. blackburniae. Crown with a more or less distinct centra) spot of orange or yel- 

 lowish, f. Spot on crown, superciliary stripe (widening on sides of neck), suborb- 

 ital spot, with whole chin, throat and jugulum, rich cadmium- orange, most intense 

 on throat; other markings about head, with prevailing color of upper parts, deep 

 black, relieved by a large pure white wing-patch, covering both rows of coverts; 

 breast and belly yellowish white, the sides streaked with black, s: Similar in 

 pattern, but black replaced by streaked black and grayish olive, the orange of 

 throat, etc., much paler. 



9. D. macalosa. White tail-spots on the middle portion of the inner webs, and on all 

 the feathers except the intermediae. i: Crown bluish gray; lores, auriculars, and 

 back, black; rump and lower parts rich gamboge-yellow, the juguhim and sides 

 broadly striped with deep black; eyelids, postocular streak, wing-patch (covering 

 both rows of coverts), and crissum, white. $: Similar to the <, but duller, the back 

 mixed with olive-green, the wing-patch dissolved into two distinct bands. Young 

 in jail and winter: Above olive, becoming grayish on the head and greenish on the 

 back; throat pale grayish; no streaks across jugulum. 



10. D. coronata. Crown with a central spot of yellow, and sides of breast, also lower 

 part of rump, with a patch of the same; throat and other lower parts white, or 

 whitish, i; Above bluish gray, streaked with black, the witig with two white 



