I highly suggest taking her to a vet. She might give herself brain damage if she's doing that. There could be something wrong with her brain, such as damage or a disease.
Take her to a vet ASAP.
Hi I have 2 pet parakeets which I have had for almost 6 years now and one of them started to hit her head and at times it worse than others. It also seems a little disoriented. Please help?