We have Ravens in Tas as well. They are a very cunning bird, especially when it comes to stealing the fruit off our trees and raspberries from the canes. I've noticed they often work as a team, one keeps lookout while the other raids the crop. I put a steel mesh cover over the raspberries, the birds jumped up and down on it until they had pushed the mesh down enough to expose the raspberries. Very nice shot Ving.