Ключевые слова: anatidae, animal, animal background, animal farm, anser, anser anser, anser cygnoides, asian duck, beak, bill, black duck, chicken coop, coop, drake, duck, duck farm, eat, eating, farm, farm animal, feed, feeding, floor, food, goose, goose head, grass, head, hen, henhouse, home, house, life, mandible, poultry, swan, unaware, wing,