MegF.
That's for sale???
Most likely it's due to stress Elle. My cages all have solid sides except the doors. I think visibility on all sides does stress them out. Especially when they've switched to a larger cage from a smaller one. Depends upon the animal. I had several ground themselves for days after transitioning them over to the adult cages. Now they are fine. I personally like sphagnum moss, plants and natural perches. I find a smooth perch makes it difficult for them to shed out.