I swear, one of their reasons for living is to drive us insane...neither of my two now have slept on the wall, but I have had 2 that did. I call it "bug sleep" because they look like bugs with their tails curled sideways....it's crazy making! That's what it is....
But I can't see any reason to think it's not okay.
I had a jacksons that was free ranging and decided he wanted back in his cage for lights out but I wasn't there and the door was closed. Result? He slept on the outside wall of the cage.
I had a jacksons that was free ranging and decided he wanted back in his cage for lights out but I wasn't there and the door was closed. Result? He slept on the outside wall of the cage.