Free as a Bird

Have you ever heard the saying "free as a bird?" Birds are considered free creatures because they have an amazing ability to fly. They can get away from danger very quickly. We observe them sitting on the branches of trees, singing and chirping. The impression we humans get is that they are happy and carefree. Of course, we humans have no idea what is going on in their minds. Is this musical singing, or do they tell stories? Do they complain, or maybe they tell other birds some gossip...

Listen?