Chicken

[mamachi]

I use the chicken (I call him Hans) in my party and got him to level 22. It was just outside the Monastery.
Then I put him outside the party and continued into the Monastery and got Victor and 2 sidequest. I look at the party to see if I level them up to nearly the same levels and now the chicken or is it a Hen is back at level 15.

I dont know exactly when it happend.