MAYBE the Rickeybird's preferences are typical of his species. I wouldn't be surprised, from what I have learned about their habitat. His skinny little cockatiel feet are not very good at climbing or balancing on one foot while playing with a big toy. Doesn't like swings at all. A hanging toy that's too heavy can knock him off his perch if he gets too vigorous with it. When be battles his victims, he like to stand on a skinny perch, the better to get his feet completely around and "locked". The best victims are hanging, light-weight and beakable... he LOVES to slam things against the bars... it's Patagonian percussion! And of course I keep a variety of sizes and textures of perches elsewhere about the cage. But outside, the cage, MANNNNN does he love to run. So balls and chaseable things are good. Relative to other parrots I have seen walking/running... he's pretty graceful. Those flexible little feet lend themselves to speed. He lowers his head almost to the ground and zooms off. From the side he makes me think of the roadrunner cartoon, head down, long tail out straight behind. I should teach him to say MEEP MEEP!