it's always a disappointment when you buy a bird as pretty as the female eclectus i am going to post a picture of a female on the picture board.
my son has one for more then ten years and it started to pick at abvout 2 years okd, if it's a medical problem like lice or something on the skin, it can be corrected, but if it's a nervous habit, i have never heard of anything that will stop it.
ross has sprayed his bird with a safe spray that the birds don't like, doesn't work.
i have heard of people spending loads of time with the picking bird hoping the activity would correct the problem, doen't help..
i have even heard of putting a collar around the birds neck so she can't preen or pull feathers, similar to what they use for a dog or cat that has stiches and you don't want them pulling them out. 6 months later when the collar was removed, the bird went right back to picking.
i don't think i've ever seen any pictures of wild birds picking. if they did, they would be unable to navigate or keep warm or cool,
i suspect it's something about not needing the feathers for protection.