This quest is not available in game.
Travel to Shadra'Alor and search for traces of Featherbeard.
The journal's most recent entries detail Featherbeard's concern about a growing number of Witherbark troll raids on the Wildhammer gryphon aeries and a rash of egg thefts. A search of the smaller Witherbark settlements in the area appears to have yielded no information.
The last entry describes Featherbeard's suspicion that a Witherbark witch doctor named Mai'jin is behind the raids. The last, hastily written sentence states the dwarf's intention to travel to Shadra'Alor in search of the eggs.