Willow Ptarmigan (Lagopus Lagopus) In Plumage Transition From Brown Summer Color To White Winter Color

transition willow ptarmigan willow grouse lagopus lagopus wildlife bird plumage seasons change willow ptarmigan grouse lagopus no people animal animals birds brown close up close ups close up close ups closeups day days daytime foliage leaves nobody outdoor outdoors peaceful peacefulness tree trees vertical white wild animals color image alaska usa