Crebain

Crebain, the large black crows hailing from the wilds of Fangorn and Dunland, emerge as ominous spies in Sauron's service during The Fellowship of the Ring, wheeling in vast, low-flying regiments that cast dense shadows and emit harsh croaks. Their sole but pivotal appearance underscores the creeping vigilance of the Dark Lord, forcing the Fellowship into hiding and highlighting the perils of open travel in Middle-earth. Though absent from later volumes, the Crebain symbolize Sauron's far-reaching eyes, evolving the narrative tension from subtle reconnaissance to the broader war.