He was raised by men in a village near Misty Mountaines, from an egg that someone stole from the eagle nest and, maybe because of this, hadn’t grown to the full size of a great eagle. He learned the ways of men and liked his human family but something drove him away from them, to his own kind. He tried to return to them but they didn’t accept him because of his human stench and manners. After that, he couldn’t return to his human family but was flying from one place to other without purpose or peace.