Ключевые слова: animal, avian, beak, bird, bird flying, bird in flight, birds, birds flying, birdwatching, cold, drake, duck, feather, feathered, flight, fly, flying, frozen, greenhead, ice, lake, male, mallard, mallard duck, natural, nature, outdoor, outdoors, pond, snow, surface, water, waterfowl, waves, wild, wilderness, wildlife, wildlife animals, wildlife photography, wing, wings, winter,