A Synopsis of the Birds of North America

by John James Audubon

Sylvicola occidentalis, Hermit Wood-Warbler, Towns. Journ. Acad. Nat. Sc. Philadelphia, v. vii. p. 190.

Hermit Warbler, Sylvia occidentalis, Aud. Orn. Biog. v. v. p. 55.

94. 19. Sylvia nigrescens, Towns. Black-throated Grey Wood-Warbler.

Plate CCCXCV. Figs. 5 and 6. Male.

Wings of moderate length, with the outer three quills nearly equal, the second longest, the first shorter than the fourth; tail slightly rounded and emarginate. Male with the upper parts bluish ash-grey, the middle of the back and tail-coverts streaked with black; the upper part of the head and neck, the loral space and cheeks, and the fore part of the neck, with a small portion of the breast black; a band from the nostril to near the eye yellow; a band over the eye, and another from the lower mandible along the side of the neck white; breast and abdomen white, the sides tinged with grey, and streaked with black; wings blackish-brown, with two white bands formed by the tips of the secondary coverts and first row of small coverts; quills edged with light grey; tail blackish-brown, the two outer feathers on each side almost entirely white, the next with a white patch on the inner web.

Male, 5, wing 2⁸/₁₂.

Columbia River. Migratory.

Sylvia nigrescens, Black-throated Grey Warbler, Journ. Acad. Nat. Sc. Philadelphia, v. vii. p. 191.

Black-throated Grey Warbler, Sylvia nigrescens, Aud. Orn. Biog. v. v. p. 57.

95. 20. Sylvicola canadensis, Linn. Canada or Black-throated Blue Wood-Warbler.

Plate CLV. Male. Plate CXLVIII. Female and Young.

Wings rather long, with the third quill longest, the second almost equal, the fourth longer than the first; tail even. Male dull light blue above, white beneath; frontal band, cheeks, throat, and sides, black; a white patch on the wing formed by the bases of the primaries; outer three tail-feathers with a patch of white on the inner web near the end, all the rest with a touch of the same. Female greenish-olive above, light dull-yellow below, with a less extended white patch on the wing, the white on the tail unconspicuous. Young similar to the female.