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