Shriekers

Shriekers are feral bat-like Abeldar (Eldar equivalent of Abhumans), who dwell on Belial IV.

Their ancestors were once normal Eldar who lived upon the Crone World, but a hundred generations of living within the Eye of Terror led the Shriekers to their current state. They now live in communal nests that lie high in Belial IV's ruins and hunt while letting loose the shrieks that give them their name. Upon encountering the creatures, the Apothecary Arrian Zorzi noted that the Shriekers were among the few stable Eldar Abhuman (Abeldar?) strains he had seen.