Once upon a time, a wise man said, “It’s really hard to tell what’s bothering a bird by just looking.” We think that’s true. Until you figure out what it is that’s bothering them, there’s no way to solve your bird's issue.
Helping your bird recover from its obsessive habit of plucking feathers is hard, but not impossible. You just need to think outside the box and focus on why your bird plucks feathers in the first place.
Think of feather plucking as a symptom. Our exotic pet birds start plucking because, usually, a range of things are wrong in their lives. So much so that they are driven to self-destruct.