Page 393 [Illustration 395: J. B. Pardoe. NEST OF YELLOW WARBLER.] Page 394 653. MANGROVE WARBLER. Dendroica bryanti castaneiceps. Range.--Southern Lower California and western Mexico and Central America. This species is very similar to the Yellow Warbler but the entire head and neck of the male are yellowish chestnut. Their nesting habits or eggs do not vary in any essential particular from those of the common Yellow-birds of the United States. 654. BLACK-THROATED BLUE WARBLER. _Dendroica cærulescens cærulescens._ Range.--Eastern North America, breeding from northern United States northward; winters in the Gulf States and southward. These black-throated bluish-backed Warblers are abundant in swampy woodland both during migrations and at their breeding grounds; either sex can readily be identified in any plumage, by the presence of a small white spot at the base of the primaries. They nest in underbrush or low bushes only a few inches above the ground, making the nests of bark strips, moss rootlets, etc., lined with fine grasses or hair; the eggs are pale buffy white more or less dotted with pale brownish; size .65 × .50. Data.--Warren, Pa., June 9, 1891. 3 eggs. Nest one foot from the ground in brush; made of fine pieces of rotten wood, laurel bark and lined with fine grasses. 654a. CAIRNS WARBLER. _Dendroica cærulescens cairnsi._ Range.--Mountain ranges of North Carolina to Georgia. A darker form whose habits and eggs are identical with those of the last. [Illustration 396: Mangrove Warblers. Black-throated Blue Warblers.] [Illustration: Greenish white.] [Illustration: Buffy white.] [Illustration: deco.] [Illustration: left hand margin.] Page 395 655. MYRTLE WARBLER. _Dendroica coronata._ Range.--Eastern North America, breeding from northern United States northward. Winters in the southern half of eastern United States. This beautiful gray, white and black Warbler can readily be identified by its yellow rump, side patches and crown patch. It is one of our most common species during migrations when it is found west to the Rockies and casually farther. They nest on the lower branches of coniferous trees, making their homes of rootlets, plant fibres and grasses; during June or the latter part of May, three or four eggs are laid; they are white, spotted with several shades of brown and lilac; size .70 × .50. Data.--Lancaster, N. H., June 7, 1888. Nest in a small spruce, about 6 feet up; made of fine twigs, lined with feathers. 656. AUDUBON'S WARBLER. _Dendroica auduboni auduboni._ Range.--Mountain ranges of western United States from British Columbia to Mexico.