Lol, Paris was way ahead of you...they cannot reach the window frames, but of course they can reach the drywall...and she thought, hey, let's expand this place. She dug a trench in the drywall with her beak, and believe me for a few days I was very concerned for what that would do to her, ingesting that, if she did! We immediately put up acrylic over the spot she dug at, and have been very watchful of any nicks in the wall since. However, it seems that the game lost it's fun then, because she hasn't bothered to go after any other areas of wall...we assume she has figured out acrylic would just keep appearing, and she will have to deal with that horrible noise maker - the drill!
Jack has always been a model citizen, he probably doesn't even remember a cage. Paris did, though, and she used to chew on the bars a lot - she figured out humans hate that twanging sound the metal makes, lol. Not surprisingly, she ran her beak back and forth over most of the walls of the room before settling in to dig at that spot. Since we covered it, nothing - at least for the past month. I never see her running her beak along the wall like before, though, so hopefully we nipped that in the bud - though only time will tell!
This is their bedroom and play area, they have no cages...I do have a video camera mounted on the ceiling, though, that I can watch them on when I am not in there with them. (There is also a couch in there they are nice enough to pay no attention to, lol)