On Spirit's Wings
Find a Bloodmaul Taskmaster and a Bloodmaul Soothsayer engaged in conversation, then use Rexxar's Whistle to summon Spirit to spy on them.
If the Mok'Nathal are tormented by the Bloodmaul ogres, then I will stop them and their followers. Ogres are simple creatures, and there is little profit they could gain from harassing the Mok'Nathal. There must be something more to this. <Name>, take Spirit, my hawk, and spy upon the conversations of the Bloodmaul's leaders. He may go undetected where we cannot.
Locations
Progress
What have you learned, <Name>?
Completion
<Spirit perches upon Rexxar's shoulder, while Rexxar listens intently.>
So it is the sons of Gruul that are behind the ogres' actions. They command the Bloodmaul ogres to destroy the Mok'Nathal to gain their favor.
You will receive: 3 
70 
4 39
Gains
Upon completion of this quest you will gain:
- 1150 experience