Range.--Whole of North America, north to the limit of trees, breeding from the middle portions of the United States northward; winters south of our borders. This dull-colored Swallow is grayish above and white below, with a gray band across the breast, they breed in holes in embankments, digging small tunnels from one to three feet in length, enlarged and lined at the end with grass and feathers. During May, June or July, according to latitude, they lay from four to six pure white eggs; size .70 × .50. 617. ROUGH-WINGED SWALLOW. _Stelgidopteryx serripennis._ Range.--United States, breeding from Mexico north to southern New England, Manitoba and British Columbia; winters south of our borders. This species is slightly larger than the last and similar but with the throat and breast grayish and with the outer web of the outer primary provided with recurved hooks. They nest in holes in embankments, in crevices in cliffs or among stones of bridges or buildings. Their eggs are like those of the Bank Swallow but average a trifle larger; size .75 × .52. [Illustration 376: White.] [Illustration: White.] [Illustration: 615--616.] [Illustration: White.] [Illustration: White.] [Illustration: left hand margin.] Page 375 WAXWINGS. Family AMPELIDÆ 618. BOHEMIAN WAXWING. _Bombycilla garrulus_. Range.--Breeds in the Arctic regions except in the Rockies where it nearly reaches the United States; winters south to the northern tier of states. This handsome crested, grayish brown Waxwing resembles the common Cedar Waxwing but is larger (length 8 inches), has a black throat, much white and yellow on the wing and a yellow tip to tail. Their nests are made of rootlets, grass and moss, and situated in trees usually at a low elevation. The eggs resemble those of the Cedar-bird, but are larger and the marking more blotchy with indistinct edges; dull bluish blotched with blackish brown; size .95 × .70. Data.--Great Slave Lake, June 23, 1884. Nest in a willow 8 feet from the ground. Collected for Josiah Hooper. (Crandall collection). 619. CEDAR WAXWING. _Bombycilla cedrorum._ Range.--Whole of temperate North America, breeding in the northern half of the United States and northward.