Use techniques of training previously learned. Let him explore table on his own. When walks on table on your command, praise, reward. Do it more before going on to next behavior. H ave bird step on table.
Place arm a few inches away.
If he doesn't, try luring him with a treat. If bird is still reluctant, use a stick for him to get on. Later, you can substitute your arm for the stick. It may take several days. When he finally gets on the arm, lengthen the distance, but not too quickly.