Francisco Piedrahita: Mountain Chickadee (Poecile gambeli)
Francisco Piedrahita: Carolina Chickadee (Poecile carolinensis)
Francisco Piedrahita: Black-capped Chickadee (Poecile atricapilla)
Francisco Piedrahita: Black-capped Chickadee (Poecile atricapilla)
Francisco Piedrahita: Boreal Chickadee (Poecile hudsonicus)
Francisco Piedrahita: Tufted Titmouse (Parus bicolor) (Baeolophus bicolor)
Francisco Piedrahita: Tufted Titmouse (Parus bicolor) (Baeolophus bicolor)
Francisco Piedrahita: Tufted Titmouse (Baeolophus bicolor)