Ключевые слова: animals, birds, bizarre, boundary, comedy, concepts, crossing, crossroads, danger, domestic, duck, ducks, family, farm, frontier, fun, gate, group, humor, ideas, intersection, joke, journey, line, motion, moving, outdoors, pets, poultry, railroad, railway, red, road, rural, safety, sign, speed, stop, symbol, traffic, train, transportation, travel, waddle, walk, warning,