Bring Sharpbeak's Feather to Thadius Grimshade in the Blasted Lands.
Take this feather to Thadius Grimshade, the diviner. He left Aerie Peak years ago to pursue darker knowledge, but in his heart he is still a Wildhammer!
And perhaps his talents can help us find Sharpbeak.
This feather was taken from the nest where the gryphon child sleeps. If you give it to Thadius then, with luck, he can use his divining magics to find Sharpbeak.
Good luck, [player]. You will find Thadius in the Blasted Lands, in the mage tower of Nethergarde Keep.