Ключевые слова: agriculture, animal, avian, beak, beautiful, beauty, bird, birds, black, color, domestic, domesticated, donald, drake, drop, duck, ducks, eat, farm, farming, green, lake, life, lovely, male, mallard, meat, nature, ornithology, park, pet, pond, pretty, river, summer, swim, water, waterfowl, white, wild, wilderness, wildfowl, wing, zoo,