however, to seize other insects when they come within reach. It remains almost constantly among the bushes, and is seldom seen on trees of any size.
Sylvia solitaria, Ch. Bonaparte, Synops. of Birds of the United States, p. 87.
Blue-winged Yellow Warbler, Wils. Amer, Ornith. vol. ii, p. 109. PI. 15. Fig.4.
Adult Male. Plate XX. Fig. 1.
Bill nearly as long as the head, straightish, subulato-conical, acute, as deep as broad at the base, the edges acute, the gap line a little deflected at the base. Nostrils basal, lateral, elliptical, half-closed by a membrane. Head rather small. Neck short. Body slender. Feet of ordinary length, slender; tarsus longer than the middle toe, covered anteriorly by a few scutella, the uppermost long; toes scutellate above, the inner free, the hind toe of moderate size; claws slender, compressed, acute, arched.
Plumage soft, blended, tufty. Wings of ordinary length, acute, the second quill longest. Tail longish, rounded when expanded, slightly forked when closed.
Bill black, with a pale margin. Iris dark brown. Feet and claws flesh-colour, tinged with yellow. Forehead, crown, and under parts of a rich bright-yellow. Back of the head and neck, the back and upper tail coverts bright grass-green. Lore black. Wings greyish-blue, slightly margined with paler, the first two rows of coverts tipped with whitish. Four middle tail-feathers greyish-blue, the outer webs of the rest, and an oblique portion of the outer feather at the end, of the same colour, their inner webs white..
Length 4¾ inches, extent of wings 7; bill along the ridge ½, along the gap 1.
Adult Female. Plate XX. Fig. 2.
The female scarcely differs from the male in appearance, and is of nearly the same dimensions.