Befowl

These undead fowl seem to take great pleasure in frightening other crytures, and especially humans. Their haunting cries induce a supernatural fear in those who hear them and they use this to terrorize other living things for their own amusement. Packs of wild Befowl have been known to surround prey and drive them in circles as they try to escape their terrifying calls.

If you want to learn more about Crytures, my monster-collecting TTRPG, check out the wiki over here!
https://www.worldanvil.com/w/crytures-dicebag