[Illustration 448: Hermit Thrush.] [Illustration: Bluish green.] [Illustration: Greenish blue.] [Illustration: American Robin.] [Illustration: left hand margin.] Page 447 761b. SOUTHERN ROBIN. _Planesticus migratorius achrusterus._ Range.--The Carolinas and Georgia. The eggs of this bird, which is said to be smaller and duller colored than the northern variety, show no differences in any respect. 762. SAN LUCAS ROBIN. _Planesticus confinis._ Range.--Southern Lower California. This is a very much paler form of the American Robin; its eggs probably will not differ from those of the others. [Illustration 449: J. B. Pardoe. NEST AND EGGS OF ROBIN.] [Illustration: right hand margin.] Page 448 763. VARIED THRUSH. _Ixoreus nævius nævius._ Range.--Pacific coast from northern California to Alaska; south to Mexico in winter. These handsome birds breed abundantly in Alaska and locally in mountain ranges south to northern California. They nest at low elevations in trees, making them of moss, twigs, weeds and grasses, forming a flat shallow structure. Their eggs are greenish blue sharply but sparingly spotted with dark brown; size 1.12 × .80. Data.--Delta of Kowak River, Alaska, June 11, 1899. Four eggs. Nest 12 feet from the ground, against the trunk of a slender spruce and supported by a clump of stiff twigs. 763a. NORTHERN VARIED THRUSH. _Ixoreus nævius meruloides._ Range.--Interior of western North America, breeding from British Columbia to Alaska. Its habits and eggs do not differ from those of the last. 764. SIBERIAN RED-SPOTTED BLUETHROAT. _Cyanosylvia suecica robusta._ Range.--Northern Asia; casually to Alaska. This beautiful foreigner nests on the ground and lays four to six greenish blue eggs, spotted with reddish brown; size .75 × .50. 765. WHEATEAR. _Saxicola œnanthe œnanthe._ Range.--Asia; casual in Alaska in summer; nesting habits and eggs like the next. 765a. GREENLAND WHEATEAR. _Saxicola œnanthe leucorhoa._ Range.--Europe and Greenland; casual on the Atlantic coast of North America. This very abundant Old World species is a common breeding bird in Greenland and probably also in Labrador. They nest in crevices of quarries, holes in the ground, or stone walls, making a rude nest of weeds, moss or grasses, lined with hair or feathers, and during May lay from four to six pale greenish blue eggs; size .90 × .60. [Illustration 450: Greenish blue.] [Illustration: Wheatear.] [Illustration: Pale greenish blue.] [Illustration: left hand margin.] Page 449 [Illustration 451: BLUEBIRD.] Page 450 766. BLUEBIRD. _Sialia sialis sialis._ Range.--Eastern United States, breeding from the Gulf to southern Canada. Winters in the southern half of the United States.