Howard Patterson:
Tufted Titmouse
Howard Patterson:
Black-capped Chickadee
Howard Patterson:
Mountain Chickadee
Howard Patterson:
Black-crested Titmouse
Howard Patterson:
Boreal Chickadee
Howard Patterson:
Bridled Titmouse (Baeolophus wollweberi)
Howard Patterson:
Boreal Chickadee (Poecile hudsonicus)
Howard Patterson:
Black-capped Chickadee (Poecile atricapillus)