Brewster
It was migrating with other Warblers, and kept to the tops of the highest trees. It is not improbable, however, that when in its breeding haunts it may prove to be a low-ranging bird like most of the members of this genus. Its movements were rather leisurely, and resembled those of H. pinus or H. celata. Its song, which only Mr. Brewster was fortunate enough to hear, is described by him as resembling the song of the Parula Warbler.
WOOD WARBLERS. 641. Helminthophila pinus (Linn.). BLUE-WINGED WARBLER. (Fig. 95.) Ad. 8. -Crown and entire under parts bright yellow, a black line through the eye; back and rump bright olive-green; wings and tail bluish gray; greater and middle wing-coverts tipped with white or yellowish white; outer three tail-feathers with large white patches on their inner webs, fourth feather with a much smaller patch. Ad. 0+ .-Similar, but yellow on the head confined to the forehead; under parts duller. L., 4.80%; W., 2·40; T., 1.80; B. from N., 33.