Ключевые слова: background, beak, bird, brown, chilly, city, cold, day, drake, duck, environment, europe, feather, feeding, female, female animal, floating, flock, freeze, frost, frozen, group, hungry, ice, lake, landscape, male, male animal, mallard, melting, nature, outdoor, outdoors, park, pond, river, russia, season, snow, spring, swim, thaw, water, waterfowl, weather, white, wild, wild animal, wildlife, winter,