Mirren Longbeard in Hellfire Peninsula wants you to bring him 8 Kaliri Feathers from the various kaliri found in the Den of Haal'esh.
The arakkoa at the Den of Haal'esh, south of here, breed a magnificent species of birds called kaliri. Their feathers would fetch a bundle at the trading posts back in Azeroth. Just think of all the ale I could buy then!
Tell you what, you bring me a stack of kaliri feathers and I'll give you my very own hat. What do you say? You'll never find a hat like this one! Do we have a deal?