Ключевые слова: anas platyrhynchos, anatidae, animal, baby animal, background, beautiful, bird, bird protection, birds, blue, boston city, boston common, brown, cityscape, day, duck family, duckling close up, ducklings, ducks, environment, environmental protection, feather, garden, grass, green, lacquer, landscape, mallard, natura, naturale, outdoor, park, pond, river, sky, skyscraper, summer, sunny, travel, tree, urban ducks, water, white, wild, wildlife,