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."