The Chestnut-backed Chickadee (Poecile rufescens, formerly Parus rufescens) is a small passerine bird in the tit family Paridae.
It is found in the Pacific Northwest of the United States and western Canada, from southern Alaska to southwestern California. It is a permanent resident within its range, but they sometimes fly short distances in winter when their food supply gets low. They usually move to lower elevations in the same area when winter starts and move back up to higher elevations in late summer.
It is a small chickadee, 11.5–12.5 cm (4.5"-4.9") long with a weight of 8.5–12.6 g. The head is dark blackish-brown with white cheeks, the mantle is bright rufous-brown, the wing feathers are dark gray with paler fringes. The underparts are white to pale grayish-white, with rufous or pale gray flanks. They travel in mixed flocks. They are often seen in large groups with bushtits and warblers.
It is found in the Pacific Northwest of the United States and western Canada, from southern Alaska to southwestern California. It is a permanent resident within its range, but they sometimes fly short distances in winter when their food supply gets low. They usually move to lower elevations in the same area when winter starts and move back up to higher elevations in late summer.
It is a small chickadee, 11.5–12.5 cm (4.5"-4.9") long with a weight of 8.5–12.6 g. The head is dark blackish-brown with white cheeks, the mantle is bright rufous-brown, the wing feathers are dark gray with paler fringes. The underparts are white to pale grayish-white, with rufous or pale gray flanks. They travel in mixed flocks. They are often seen in large groups with bushtits and warblers.
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