dude. the chicken rune had another purpose.
in one of the quest in high halls, u must stop a sorcerer that summons trolls.
if u kill him or do anything that can end his pathetic life, ur reward for the mission would also be like the sorcerer's life u just ended, pathetic.
if u give him the chicken rune, he will back down peacefully. u will get pretty nice rewards.
what reward u say? huhu. 2 free legendary items according to your level. one for ur armor and one weapon.
i finish the quest when my level is 30. so i get legendary items from lvl 25 - 30.