Ключевые слова: alone, animal, background, beak, beautiful, bird, bird walking, brown, canal water, colorful, common duck, cute, duck, embankment, embankment river, environment, environmental, fauna, feather, feathers, freedom, ice, ice floe, lake, looking, male, mallard, nature, ornithology, outdoor, park, plumage, pond, river, russia, saint petersburg, snow, sunny day, water, water bird, waterfowl, white, wild, wild duck, wildlife, wings, winter scene,