A bird is in a cage¹ outside a window. She often sings at night when all other birds are asleep². One night a bat³ comes. He asks the bird, "Why do you only sing at night?" The bird says, "Last year when I was⁴ singing in the daytime⁵, a bird catcher heard my voice⁶ and caught me with his net⁷. Since⁸ then I never sing in the daytime." The bat says: "But it is no use doing so. You are in the cage now."