Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Boreal Chickadee (Poecile hudsonicus, formerly Parus hudsonicus) is a small passerine bird in the tit family Paridae. Adults are 12.5–14.5 cm long with a weight of 7–12.4 g. 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.

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