Ключевые слова: anas platyrhynchos, anatidae, animal, animal isolated, bedraggled, bill, bird, bird isolated, conservation, drake, duck, ecology, environment, feathers, female, feral, fowl, green, head, lake, male, mallard, nature, ornithology, park, pond, swimming, vertebrate, warm blooded, water, waterfowl, wet, wetlands, wild, wildlife, zoology,