Range. - Eastern United States, breeding in the southern half.
The upper parts of this handsome species are bluish gray with a greenish patch in the middle of the back; the throat and breast are yellow with a patch of black and chestnut. They are abundant birds in suitable localities, breeding in swamps, especially those with old or dead trees covered with hanging moss (usnea). The nests may be found at any height from the ground, and are usually made by turning and gathering up the ends of the hanging moss to form a pocket, which is lined with fine grass or hair. The four to six eggs are white or creamy white, wreathed with specks of reddish brown and chestnut. Size .64 x .44.
Parula Warbler. Sennett's Warbler.
Range. - Northern half of eastern United States and southern Canada; winters from the Gulf States southward.
The nesting habits of the northern form of the Blue-yellow-backed Warbler are in all respects like those of the last, and like them, where moss grown swamps are not to be found, they have been known to construct nests of moss suspended from branches of trees, or to nest in bunches of dead leaves. Data. - Oxford, Mass., June 7, 1895. Nest in a dead pine swamp; made in end of hanging moss about 6 feet from the ground. Large colony breeding.