Last year we had one of the members of our parrot club come in and do a presentation on her sanctuary.
The woman's name is Diane Dwyer, and she's given her life, and her home over to helping out parrots who are in dire need of a safe place to live. Diane does some amazing work with her rescues. Unconditional love does make a difference
I highly recommend visiting her site if you need help with plucking issues. I'm not saying she'll give you advice, or the answer to why your beloved fid plucks. So don't get all excited yet.
She has however designed a cape/collar for her plucker/mutilator parrots, and has her email address posted on her site, for anyone needing directions on how to make one of your own.
Here's the link:
http://www.2ndchanceaviary.freeservers.com/
Deb