AUDUBON'S WOOD- WARBLER. 27 



young of this species, at that time so much like those of the Yellow-Rump, 

 were already out in small roving and busy flocks, solicitously attended and 

 occasionally fed by the still watchful parents. We may notice in this species ' 

 as a habit, that, unlike many other birds of its tribe, it occasionally frequents 

 trees, particularly the water oaks and the lower branches of those gigantic 

 firs, which attain not uncommonly a height of 240 feet. In the branches of 

 the latter, near a cliff, opening on a prairie by the banks of the river Colum- 

 bia, I have reason to believe that a pair of this fine species had a nest, as 

 great solicitude was expressed when I several times accidentally approached 

 the place." 



I have given figures of the male and female, taken from specimens obtained 

 by Mr. Townsend on the Columbia. 



Sylvia Audubonii, Audubon's Warbler, Townsend, Journ. Acad. Nat. Sc. Philadelphia, 



vol. vii. p. 190. 

 Audubon's Warbler, Sylvia Audubonii, Aud. Orn. Biog., vol. v. p. 52. 



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 mar- 

 gined 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 margin- 

 ing 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 indi- 

 cations 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, 5f, wing, 3 T V 



Columbia River, northward. Common. Migratory. 



