Ключевые слова: animal, avian, background, beautiful, biology, bird, birds, black, creature, cute, ecology, environment, fauna, feathers, garden, lake, natatorial, nature, ornithology, outdoors, park, plumage, pond, river, season, species, summer, swan, swans, swimming, water, waterbird, waterfowl, wild, wildlife, zoo, zoological, zoology,