Ravens

Ravens in Middle-Earth are capible of Speach and were allies of the Dwarves of Erebor, they lived at nearby Ravenhill. Around the time of the Battle of Five Armies, the Ravens were led by Roäc. Ravens can apparently live for a long time as Roäc was 153 years old when he meet Thorin Oakenshield and Company. Ravens may have been Maiar in bird-shape.