These creatures are a reliable source for Giant Bat Wings, which are used in spell research practice. Sure, these are available from other sources, but if you can't find them on a vendor near a popular drop spot, I suggest farming the wings off of these critters.
Azzar's Dreadful Hat (Normal): The giver of this quest is located in observation area of Paineel overlooking the newbie grounds. His name is Azzar Habbib, a necromancer allied with the Heretics. This quest worked with indifferent faction.
You say, 'hail Azzar Habbib'
Azzar Habbib says 'I'm not in any mood for conversation. My favorite hat was torn right from my head by a gigantic bat the other night and I am quite upset.
In the Warrens, the Cave Bat Lord, blue to a level 23, can be found past the King's Throne Room surrounded by giant cave bats. He drops Azzar's Dreadful Hat, a helm for Cazic Thule worshipers only, AC 2, 0.4 weight, Lore, No drop, and no other stats. Return this to Azzar Habbib.
Azzar Habbib gasps in astonishment and says You...you..found my hat!! This is the most I can repay you but perhaps I can reward you further for some other tasks? This leads to a new quest. Reward: Black Lace Sash
welcome to http://members.tripod.com/bervin0/ and by the way the bat drops a hat hmmmmm wonder what it could be for? maby you should ask around at the newbie entrance!