dhw: A note for the purists: I know the accent is a poor imitation, neither the crows nor Darwin came from Texas, and the crows are still crows so they don't prove the theory. But I would like to think this wonderful tale, which is offered free of charge to the world of all true believers and non-believers, teaches us that crows might be able to use sticks and leaves without needing to be preprogrammed 3.8 billion years ago. - I loved it! Just just a wishful tale by a great writer of books and plays, proving nothing as noted.