This seems to be the Pacific coast representative of the _P. atricapillus_, as _septentrionalis_ belongs to the middle region, corresponding in its differences with other Western representatives of Eastern species. HABITS. Dr. Cooper, in his Birds of Washington Territory, says of this variety: “The common Black-capped Chickadee, so abundant in the Eastern States, is, in Washington Territory, represented by the Western Titmouse, frequenting the low thickets and trees, where it is always busily employed seeking food.” He observed its nest near Puget Sound, burrowed in soft rotten wood. Dr. Suckley found it quite abundant in the valley of the Willamette, and also at Fort Vancouver during winter. In habits it closely resembles the Black-Cap of the Eastern States. It is chiefly found in Oregon and Washington Territory, visiting the northern part of California in winter, when it is also abundant near the Columbia River. At this season it is generally found among the deciduous trees along streams and oak groves, seeking its food among the branches. It feeds on seeds and insects, and is very fond of fresh meat, fat, and crumbs of bread. They migrate but little, remaining at the Columbia River even when the ground is covered with snow. The eggs are as yet unknown, but without doubt they closely resemble those of the Eastern species. Parus carolinensis, AUDUBON. SOUTHERN CHICKADEE. _Parus carolinensis_, AUD. Orn. Biog. II, 1834, 474, pl. clx.—IB. Birds Am. II, 1841, 152, pl. cxxvii.—BAIRD, Birds N. Am. 1858, 392; Review, 81.—SCLATER, Catal. 1861, 13, no. 81. _Pœcile carolinensis_, BON. Consp. 1850, 230. SP. CHAR. Second quill appreciably longer than secondaries. Tail very little rounded. Length about 4.50 inches; wing less than 2.50; tail, 2.40. Back brownish-ash. Head above, and throat, black, separated on sides of head by white. Beneath white; brownish-white on sides. Outer tail-feathers, primaries, and secondaries, not edged with white. HAB. South Atlantic and gulf region of United States, north to Washington, D. C., Texas and the Mississippi Valley; north to Central Illinois; the only species in the southern portion of the latter State. This species is, in general, rather smaller than _P. atricapillus_, although the tail and wing appear to be of much the same size. The body and feet are, however, smaller, and the extent of wing is three quarters of an inch less. The bill is apparently shorter and stouter. The primaries are proportionally and absolutely considerably longer than the secondaries in the present species, the difference being .55 of an inch, instead of .45. The tail is rather more rounded, the feathers narrower.