My grey Bugi is an interesting bird. He refuses to go to the toilet in his cage at all! He always waits until I get him and go on the floor or in his play gym, tree, etc. I can't let him out all the time, so if I come home in the evening and get him out, he will leave on the floor enormous amount of...you know. I never even saw these much!! His cage is always absolutely clean. What should I do? I can't let him out for all day!Thank you