Azure Warbler, Sylvia azurea, Aud. Orn. Biog. v. i. p. 255, Male; v. v. p. 456. Blue-green Warbler, Sylvia rara, Aud. Orn. Biog. v. i. p. 258. Young Male. 87. 12. Sylvicola Blackburniæ, Lath. Blackburnian Wood-Warbler.--Blackburnian Warbler. Plate CXXXV. Male. Plate CCCXCIX. Fig. 3. Female. Outer three quills nearly equal, first generally longest; tail slightly emarginate. Male black above, streaked with white; a small patch on the top of the head, a band from the base of the upper mandible over the eye, passing down the neck and curving forwards, and a small band under the eye, orange-yellow; lore and a patch behind the eye black; quills black, the outer margined with grey, the inner with white, of which there is a large patch on the wing, including the inner secondary coverts, and the tips of the outer, with those of the first row of small coverts; three outer tail-feathers on each side white, excepting an oblong portion toward the end, the next also partially white; throat and fore part of breast rich reddish-orange; breast dull yellow, the rest white; the sides of the neck and body streaked with black. Female with the upper parts light olivaceous, each feather dusky in the centre, the other parts as in the male, but the tints much paler, the spot on the top of the head greenish-yellow, the feathers tipped with dusky, the band over the eye pale yellow, that on the lore and ear-coverts brown, the fore part of the neck yellow, and the sides less strongly streaked than black. _Male_, 4-3/4, 7-3/4. _Female_, 4-8/12, wing 2-((7-1/2)/12). From Texas northward. Rather rare. Migratory. Blackburnian Warbler, Sylvia Blackburniæ, Wils. Amer. Orn. v. iii. p. 67. Sylvia Blackburniæ, Bonap. Syn. p. 80. Blackburnian Warbler, Sylvia Blackburniæ, Nutt. Man. v. i. p. 379. Blackburnian Warbler, Sylvia Blackburniæ, Aud. Orn. Biog. v. ii. p. 208; v. v. p. 78. 88. 13. Sylvicola æstiva, Gmel. Yellow-Poll Warbler. Plate XCV. Male. Plate XXXV. Young Male and Female. Outer four quills nearly equal, second longest; tail emarginate. Male with the upper parts pale yellowish-green, the rump greenish-yellow, the fore part of the head, cheeks, throat, sides of the neck and lower parts pure yellow, the breast and sides streaked with brownish-red; feathers of the wings deep brown, primaries margined with yellowish-green, secondaries, their coverts, and the first row of small coverts with yellow; tail-feathers brown, with the greater part of the inner webs and a portion of the outer yellow, excepting the middle two. Female similar, but with the colours less bright, and the streaks on the breast and sides obsolete. Young with the upper parts yellowish-green, tinged with brown, forehead, sides of head, and lower parts deep yellow. _Male_, 4-3/4, 8. From Texas northward, and throughout the interior. Abundant. Migratory.