My sun likes to
wave, turn around on cue,
put a ball in a cup, and lots of other tricks. (See links for step-by-step how tos)
Okay, he probably likes the treats he gets for doing them more than he enjoys the tricks themselves. He learned everything using
clicker training. I use only positive reinforcement (operant conditioning) to teach these behaviors.
Melinda Johnson's book on clicker training birds is the parrot trick training bible - it's got tons of information on this subject. You can also join the
Yahoo Bird Click group for more info.