Ключевые слова: africa, america, animal, aquatic, avian, background, beak, beautiful, bird, brown, captive, color, dendrocygna, duck, environment, face, faced, fauna, feather, fowl, lake, natural, nature, ornithology, outdoor, outside, park, plumage, pond, swim, viduata, wading, water, waterfowl, whistling, whistlingduck, white, whitefaced, wild, wildlife, zoo, zoology,