Ключевые слова: animal, animals, beak, bird, birds, black, black beak, breeding, carthusian goose, domestic bird, domestic goose, europe, eye, farms, feather, feathers, fowl, geese, goose, grass, gray feathers, humpback goose, nature, poland, poultry, warmia, warmia and masuria, warmiamasuria province, waterfowl, wing,