Crebain

Not all the creatures of the Wild are friendly to the Free Peoples and some are directly in the service of the Enemy. And there are others, who seeking dominion over their lands, might contrive to make alliances with fell things out of misguided purposes.
Crebain are a species of large black, crow-like birds native to remote parts of Wilderland 
Crebain are known to fly in large flocks resembling a huge black cloud and a big shadow cast below them. They make a horrible croaking, squawking noise when in flight which makes their presence known to all near them. Like crows and ravens, they seem to possess at least some level of intelligence.

Origin/Ancestry

Most numerous near Tharbad.