I've taken my 9 yr old cockatiel hen Gabi to 3 different vets over the past 2 years to try and figure out why she is pulling feathers. They all seem to say it is stress, however now that the stress is eliminated, she pulls out of sheer habit. Sometimes I think I should have her put to sleep because I don't know what to do. And it makes me hurt to see her pull feather after feather after feather. Do any of you have experience with a chronic feather picker, and what did you do?