WESTERN ROBIN. 761a. Planesticus migratorius propinquus. 10½ inches.
Range.—West of the Rockies, from British Columbia to Mexico. This is not the familiar bird that is found in the east, but is very secluded, and its song is seldom heard. Nest is made of leaves, grass and twigs, plastered with mud. Four greenish blue eggs (1.15 × .80).
VARIED THRUSH. 763. Ixoreus nævius. 9½ inches.
Range.—Pacific coast, from Alaska to Mexico, breeding in Oregon, Washington and California. They breed quite abundantly in the northern ranges in California and north to Alaska. Their nest is placed in small trees and bushes, usually near the ground, and is made of twigs, weeds and grass, lined with moss. Their eggs, usually four in number, are greenish blue, sharply spotted with few spots of dark brown (1.12 × .80). They have a pleasing song, which is rarely heard in their southern range.
WHEATEAR. 765. Saxicola ænanthe. 6 inches.
Range.—Alaska and accidental in Colorado, breeding in Asia. They nest in crevices of cliffs or in stone walls, building a rude nest of sticks and weeds, lined with hair and feathers. Their four or five eggs are a pale greenish blue (.90 × .60).
WESTERN BLUEBIRD. 767. Sialia mexicana occidentalis. 7 inches.
Range.—British Columbia to Lower California, along the Pacific coast. These familiar birds build in cavities in trees, or in bird houses, and make themselves at home near dwellings, especially if in the vicinity of orchards of any kind. The note of the western bird has the same familiar warble as their eastern relative. They live on small insects and caterpillars, and some of the small berries. Their four eggs are a pale bluish white (.80 × .60).
CHESTNUT-BACKED BLUEBIRD. 767a. Sialia mexicana bairdi. 7 inches.
Range.—Rocky Mountains from Colorado to Texas (not illustrated).
MOUNTAIN BLUEBIRD. 768. Sialia currucoides. 7½ inches.
Range.—Rocky Mountain regions from Canada to Mexico. Their habits are just the same, eggs averaging slightly larger.
A Albatross, Blackfoot, 31 Albatross, Layson, 32 Albatross, Short-tail, 31 Albatross, Sooty, 32 Albatross, Yellow-nose, 32 Auklet, Cassin, 14 Auklet, Crested, 15 Auklet, Least, 16 Auklet, Paroquet, 15 Auklet, Rhinoceros, 14 Auklet, Whiskered, 15 Avocet, 75