Timber loves to be sprayed, which I do daily when it is warm enough, but he doesn't take a real "bath" that often (maybe once every two weeks). To get that accomplished, I have to be vigilant in watching him. When he wants to bathe, he will start dipping his beak in his water bowl and tossing water on himself. When I see him do that, I get an 8x8 glass baking dish I keep for his bathing. It's a heavy one and doesn't tip when he stands on the edge. I put about an inch of nursery water (purified but no chemicals) in the dish and put it in the bottom of his cage. He immediately goes for the dish and gets himself thoroughly wet. If he isn't wanting to bathe, that dish can sit there all day and he won't go near it. Not ideal, but that's as far as we've gotten and it seems to work for him.