Where I live, I hear a lot of beautiful bird calls. In the early morning darkness, I hear the owls hoot. Throughout the day, I hear the crows cackle with their woundrous "cah-caaaw"; many other birds talk back and forth to each other in their amazing variety of calls and chirps. Some of them repeat the same call back and forth endlessly, it seems. I love to listen to the birds talk. So intelligent they are.