Roac

Roac is a raven and appears in the Hobbit. The ravens can talk to dwarves and are friends to them. He is the son of Carc who was chief of the great ravens so when Carc died Roac took over as chief raven. Roac delivered the news to the dwarves and Bilbo Baggins of Smaug's death. The ravens also constantly tell the dwarves about the oncoming army of wood-elves and lake-men.