As you may know I've been having some trouble with Kili being too sticky. She'll come on the recall and then will dig in and not want to go back to her perch. I understand that returning to perch isn't rewarding and she doesn't see it as an opportunity for another recall and treat. This is why I've been introducing a variable frequency of reinforcement schedule that rewards the parrot at either the point of recall or the point of return to perch.
Sometimes I give her a treat for flying to me, sometimes a treat for going back to perch, sometimes no treat at all, and sometimes a treat for both! Here's a video of a training session I did to work on this and there are some bonus tricks in there for you!
http://www.youtube.com/watch?v=--2I9nyziM8