Dungeon of Bawk Bawk

From the introduction: While enchanting some chickens to make a fun amusement dungeon in his barn for the village kids, Golbarf, a wizard/poultry farmer, accidentally imbued a chicken with the mind of Vunger, a bad wizard from another world. Vunger immediately imprisoned Golbarf in a magic bubble and used Golbarf’s power to imbue chickens with the minds of his chork soldier minions.