Do you have a snuggle hut or happy hut in her cage? Or a nest-type of bed? I would bet that may have something to do with it. The fuzzy huts can cause major hormonal issues, territory behavior, and even possibly becoming egg-bound (which is life threatening).
I respect those who choose to do wing clipping if that's what they need to do for their birds, but for myself personally I would never use that method. But we all have our own ideas, advice, experience, and path of trying to do the best for our babies, so I do understand if that may be the path for others. For me, it's a similar analogy to this: if you had a cat that scratched up your furniture and home, or even scratched at you, and a quick solution was to de-claw the cat because that will eliminate THAT behavior. BUT, the cat will no longer have its natural ability to scratch, play, relieve boredom, walk and jump and balance normally, etc. And the cat will resort to other undesirable behaviors (like biting, spraying, meowing loudly, etc. at an attempt to relieve itself from the new void it has). In a case like that, it's more work, time, and resources to find the ROOT of the behavior issue and possibly seek help from a professional, but I think fixing the long term instead of the short term is a healthy solution. I can't bear the thought of wing clipping unless it's an absolute last resort. But I do understand that it works for some people. I would just do a very critical analysis of her environment, type of toys and cage items, routine, diet, sleep, and interactions you have with her (such as flinching/reacting when she bites, which can instigate the behavior). And I would surely consult your avian vet. They see a lot of birds and have a wealth of knowledge to share!
Good luck with your bird!
