Ravens are used by people to carry messages between castles and other settlements. While doves and pigeons can also be trained to carry messages, ravens are stronger flyers, larger, bolder, far more clever, and better able to defend themselves against hawks. During wartime, soldiers often attempt to shoot down messenger ravens.
The each castle usually has their own caretaker that tends to its own flock of ravens, breeding and training them. Ravens sometimes imitate human speech like parrots. Caretakers can teach the speech of ravens.
Most ravens are trained to fly to a specific castle, but some can be taught to fly between two castles and are therefore greatly prized. Maybe once a century, a particularly clever raven might be able to fly to as many as five castles upon command.
