Ключевые слова: activity, animal, aquatic, avian, behavior, bird, birds, birdwatching, cold, duck, duckling, feather, frigid, frost, frosty, frozen, green, habitat, head, ice, icy, lake, landscape, mallard, natural, nature, outdoors, peak, reflection, scene, scenery, season, small, snowcovered, snowy, species, surface, wading, walking, water, waterbird, waterfowl, weather, wild, wildlife, winter, winters, wintertime, wintry,