Boreal Chickadee
Poecile hudsonicus

f5 @ 1/3200s, ISO:2000, Nikon D3S w 500mm

"Boreal Chickadee," Wikipedia, the free encyclopedia. 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. Molecular phylogenetic studies have shown that the boreal chickadee is sister to the chestnut-backed chickadee (Poecile rufescens).
Anchor Point, Alaska