BUDGIE, picking at his feathers on his tummy

[mdjlucan]

 

[mdjlucan]

 

[mdjlucan]

 

[BirdyBee]

What is his diet? Does he have any health issues? Can I see his cage setup? Just trying to find a potential cause.
This might help:

Plucking: A Search For Answers

If you've spent very much time with parrots you've probably heard the term or seen the results of plucking. Plucking is disturbing and complex, in many cases the reasons are difficult to pinpoint. There are no easy answers or explanations. It's a terrifying event to discover a pile of feathers...

www.parrotforums.com