Dire corbies are humanoid, bipedal birdmen that dwell deep beneath the surface world. They make their homes in large, open caverns where they hollow out individual shelters in the walls. These creatures do not now have wings, but they almost certainly did in the remote past. Why their wings disappeared and were replaced by muscular arms with claws is unknown.

Dire corbies hunt in flocks, finding great pleasure in chasing down prey. While they are omnivores, they prefer a diet of fresh meat. They hunt and enjoy the flesh of subterranean rodents, animals, and even other races. They are particularly fond of the leathery flesh of bats. A typical hunt ends with the prey cornered and trapped, then cruelly tormented and tortured for many minutes before the dire corbies finally tear it to shreds with their claws.