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