Crebain (singular: craban).
These menacing black birds from the lands between the Misty Mountains and the dark forest of Fangorn are often controlled by the forces of darkness, acting from above as the eyes and ears of the enemy. Large and intelligent, flocks of these crow-like creatures darken the skies on their mission of evil. But be warned, even one Craban is capable of alerting the enemy with the swiftness of the wind. Those wanting to avoid being seen should either hide well, or kill them quickly. Sufficient numbers of their corpses are reported to make a tasty pie.
When making records of these birds in your journals, record their genus as Craban.
Current list of the various forms of these blackbirds: