Before you get too excited let me say this really isn't much of a video, since he wont whistle while in his cage. If I leave his cage open and leave my Video Camera near it, he will land on my camera and destroy it.
To cut a long story short I managed to get him to whistle only a small part of the Adam's Family with the Click Click. Sorry this is the best I've been able to do so far. The plan is to get him doing the whole song, plus the other 2 songs he knows!