A Synopsis of the Birds of North America. John James Audubon

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      Yellow-rump Warbler, Sylvia coronata, Aud. Orn. Biog. v. ii. p. 303.

      77. 2. Sylvicola Auduboni, Townsend. Audubon's Wood-Warbler, – Audubon's Warbler

      Outer four quills nearly equal, second longest; tail slightly emarginate. Male with the upper parts bluish ash-grey, streaked with black; crown, rump, upper part of throat, and a patch on the sides of the body, rich yellow; first row of small coverts largely tipped, and secondary coverts broadly margined and tipped with white, which thus forms a conspicuous patch on the wing; quills and tail brownish-black, narrowly margined with greyish-white; a patch of white on the inner webs of all the tail-feathers, but on the central reduced to a mere edging; a small white spot on each of the eyelids; loral space and cheek black; lower part of neck anteriorly, fore part of breast, and sides, variegated with black and white or ash-grey, the latter colours margining the feathers; the rest of the lower parts white. Female without the yellow spot on the crown, although the feathers there are tinged with that colour at the base; upper parts light brownish-grey, streaked with dusky; lower parts whitish, tinged with brown, and streaked with dusky; throat and rump yellow, but of a lighter tint than in the male, and but slight indications of the yellow patch on the sides; there is much less white on the wings, and the white patches on the tail-feathers are of less extent.

      In size, form, and proportion, this species and Sylvicola coronata are almost precisely similar; and their colours are almost exactly alike, the only remarkable difference in this respect being, that the throat of the present species is yellow, while that of the former is white.

      Male, 53/4, wing, 31/12.

      Columbia River, northward. Common. Migratory.

      78. 3. Sylvicola striata, Lath. Black-poll Wood-Warbler

      First and second quills equal and longest, third a little shorter; tail emarginate. Male with the upper parts bluish ash-grey, streaked with black; the upper part of the head deep black; the secondary coverts and first row of small coverts largely tipped with white; quills and tail-feathers blackish-brown; primaries narrowly edged with greenish-yellow, secondaries broadly with white; three outer tail-feathers with a patch of white on the inner web at the end; cheeks and lower parts white; a band of black spots from the base of the lower mandible down the side of the neck and body. Female with the upper parts oil-green, streaked with black; the rump and upper tail-coverts plain and edged with grey; white wing-bands tinged with yellow; cheeks yellowish-grey, mottled with dusky, lower parts dull white, tinged with yellow and reddish the sides of the neck and body with fainter dark streaks. Young like the female.

      Male, 51/4, 81/2.

      From Texas to Labrador, where it breeds. Columbia River. Common. Migratory.

      79. 4. Sylvicola pensilis, Lath. Yellow-throated Wood-Warbler

      Outer three quills almost equal, second quill longest, fourth shorter than first; tail slightly emarginate. Male with the upper parts light greyish-blue; the forehead black, the crown spotted with the same; a white line over the eye; secondary coverts and first row of small coverts largely tipped with white; quills greyish-black, margined with light greyish-blue; tail-feathers of the same colour, the outer three with a patch of white on the inner web at the end; loral space, a band under the eye, ear-coverts, a band down the side of the neck, and numerous oblong spots on the sides of the body, black; throat bright yellow; rest of lower parts white. Female similar, but with the tints paler.

      Male, 51/2, 81/2.

      From Texas to New Jersey. In the interior along the Mississippi to Natchez. Common. Migratory.

      80. 5. Sylvicola castanea, Wils. Bay-breasted Wood-Warbler. – Bay-breasted Warbler

      Outer three quills almost equal, fourth considerably shorter; tail slightly emarginate. Male with the upper part of the head, the fore neck, and the sides, chestnut-red; forehead and cheeks, including a small space over the eye, deep black, behind which is a transverse patch of yellowish-white on the sides of the neck; back bluish ash-grey, streaked with black; tips of the secondary coverts and first row of small coverts white; quills and tail-feathers brownish-black edged with grey, the outer three of the latter with a white patch on the inner web near the end; middle of breast, abdomen, and lower tail-coverts, white, tinged with reddish. Female similar to the male, but with the tints fainter, especially the chestnut of the head and throat, which are converged into light brownish-red.

      Male, 51/4, 11.

      From Texas northward. Rather common. Migratory.

      81. 6. Sylvicola icterocephala, Lath. Chestnut-sided Wood-Warbler. – Chestnut-sided Warbler

      Outer three quills nearly equal, second slightly longer; tail slightly emarginate. Male with the upper part of the head light yellow, a small part of the forehead white; loral space and two bands proceeding from it, one over and behind the eye, the other downwards, black; upper parts bluish ash-grey, tinged behind with greenish-yellow, and streaked with black; secondary coverts and first row of small coverts largely tipped with pale yellow; quills and tail-feathers brownish-black, primaries edged with greyish-white, secondaries with yellowish-green; outer three tail-feathers on each side with a white patch on the inner web at the end; lower parts white, sides of the neck and body deep chestnut. Female similar, but with the chestnut on the sides less extended, and the yellow on the head tinged with green.

      Male, 51/4, 8.

      From Texas northward. Rather common. Migratory.