It is found in the boreal forests of Alaska, Canada and the northern United States and remains within this range all year.

[3] This call is composed of five distinct note-type categories consisting of A, B, C, D and D-hybrid with the beginning and end note both displaying a high frequency pitch.

[6] Their breeding habitat is coniferous woods in Canada, Alaska, and the northernmost portions of the contiguous United States.

Large bodies of water and mountain ranges may restrict dispersal of the boreal chickadee into places such as the Vancouver Islands and Haida Gwaii.

[3] Predators of eggs and baby boreal chickadees generally consist of tree climbing animals such as squirrels, chipmunks, mice, bears and rats.

[12] These practices are causing dramatic reductions in mature forests and rapidly modifying the habitat of boreal chickadees.

[12] The species was formerly placed in the genus Parus with most other tits, but mtDNA cytochrome b sequence data and morphology suggest that separating Poecile more adequately expresses these birds' relationships.