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Chickadees

Adults are 12.5–14.5 cm (4.9–5.7 in) long with a weight of 7–12.4 g (.24-.34 oz). They have grey-brown upperparts with a brown cap and greyish wings and tail; their face is mainly grey with white on the sides. Their underparts are white with brown on the flanks and a black throat. They have a short dark bill, short wings and a long notched tail.
Their breeding habitat is coniferous woods in Canada, Alaska and the northern edges of the lower forty-eight United States. They remain within their breeding range throughout the year, but sometimes move south in winter. Winter movements south of their range, however, appear to have become increasingly rare. They nest in a hole in a tree; the pair excavates the nest, using a natural cavity or sometimes an old woodpecker nest. The pair remains together year round and may mate for life. Advertisement