This bird is precisely like the last except that the superciliary stripe is usually white. Their nesting habits are precisely like those of the last, and the nests are usually on horizontal branches of sycamores; the eggs cannot be distinguished from those of the Yellow-throated Warbler. 664. GRACE'S WARBLER. _Dendroica graciæ._ Range.--Southwestern United States, abundant in Arizona and New Mexico. This Warbler is similar in markings and colors to the Yellow-throated variety except that the cheeks are gray instead of black. The nesting habits of the two species are the same, these birds building high in coniferous trees; the nests are made of rootlets and bark shreds, lined with hair or feathers; the eggs are white, dotted with reddish brown and lilac. Size .68 × .48. [Illustration 403: Greenish white.] [Illustration: Yellow-throated Warblers. Grace's Warblers.] [Illustration: White.] [Illustration: deco.] [Illustration: right hand margin.] Page 402 665. BLACK-THROATED GRAY WARBLER. _Dendroica nigrescens._ Range.--United States from the Rockies to the Pacific coast and north to British Columbia; winters south of our borders. The general color of this species is grayish above and white below as is a superciliary line and stripe down the side of the throat; the crown, cheeks and throat are black and there is a yellow spot in front of the eye. They inhabit woodland and thickets and are common in such localities from Arizona to Oregon, nesting usually at low elevations in bushes or shrubs; the nests are made of grasses and fibres, woven together, and lined with hair or fine grasses, resembling, slightly, nests of the Yellow Warbler. The eggs are white or greenish white, specked with reddish brown and umber. Size .65 × .52. Data.--Waldo, Oregon, June 1, 1901. Nest 3 feet from the ground in a small oak in valley. Collector, C. W. Bowles. (Crandall collection.) 666. GOLDEN-CHEEKED WARBLER. _Dendroica chrysoparia._ Range.--Central and southern Texas south to Central America. This beautiful and rare species is entirely black above and on the throat, enclosing a large bright yellow patch about the eye and a small one on the crown. In their very restricted United States range, the birds are met with in cedar timber where they nest at low elevations in the upright forks of young trees of this variety. Their nests are made of strips of cedar bark, interwoven with plant fibres and spider webs making compact nests, which they line with hair and feathers. Their three or four eggs are white, dotted and specked with reddish brown and umber. Size .75 × .55. [Illustration 404: Greenish white.] [Illustration: Black-throated Warblers. Golden-cheeked Warblers.] [Illustration: White.] [Illustration: deco.] [Illustration: left hand margin.] Page 403 667. BLACK-THROATED GREEN WARBLER. _Dendroica virens._