Every night, I make sure to put Orlando in his cage and I do lock it. I don't cover the cage as the owners did not and he doesn't make any noise during the night either. Except recently, in the morning when I come out into the living room (as his cage is in there) he isn't inside the cage! I find him sitting on this chair nearby. So far it's been two times this has happened, I don't know how he manages to get himself outside the cage, and I don't know why he does it either. What should I do? I haven't changed anything in his routine, so I'm clueless as to why he's doing it.