My budgie, Navi, doesn't like to move away from his cage. He will only come out when I take him out through the top of the cage, and even then, he doesn't want to move from the top of his cage. He moves away from my hand when I put it up there, and he doesn't always climb on the perch. Most of the time, when I leave the cage door open, he doesn't come out either. It's probably because I don't leave it open for too long, though. When he does let me move him away, though, he flies back to it when I turn him around (or when he turns around himself). My dad went and bought him a cage though, so it's rather small (I plan on getting a bigger one to fit more things inside), and he barely has anything to do because of that. I would have thought he liked being out of the cage to be more active though. Any tips/advice?