Ключевые слова: america, animal, autumn, avian, bird, cold, countryside, cut, dabble, drake, duck, duck flight, duck hunting, ducks, environment, fall, female, flight, flock, flying, fowl, hunt, hunting, hunting season, lake, male, mallard, mallard duck, mallard flight, mallards, marsh, migrate, migration, nature, north, outdoor, quack, river, route, soaring, swamp, water, waterfowl, wetland, white, wild, wildlife, winter,