His main obsession at present, however, is with a set of plastic rings we hung in his cage some weeks back. At first he ignored them and I thought of taking them out again; however, he soon realised that there was a bell hanging at the bottom of them, and it became his life's work to remove it...
He also loves the little plastic balls that hang around on the bottom of the cage; for some reason he takes umbrage at them being moved elsewhere - such as to the top of the ladder - and will hop over and toss them down, usually within about five seconds of them being placed there. He'll then throw them around on the floor, with his beak or his foot, until he remembers that he still hasn't removed the bell from the bottom of the rings, and returns for another go at it.
Pippin just loves Dave, and if he sees him passing the cage will often call until Dave stops to talk to him, and rub his belly through the bars.
We hope that one day he'll be tame enough to come out of the cage and fly around the house; not quite yet though.