@mrs. brisby I hope you don't mind, I've just copied this reply from my post in your other thread, in hopes you see it in one or the other, cos I can feel your desperation! I'm so sorry this has happened!! Even at the worst with my Baci he never flew to attack me as bad as that, lucky for me he was a bit of a reluctant flyer! Before I had so much success with the "laddering" thing the other thing I was going to do was take him to my avian vet for a health check. Sometimes, just sometimes, really heightened aggression like this is a reflection of pain or illness they may be sufferering, we've seen it here on the forums before. At the very least a good avian vet is a WONDERFUL source of advice and info at a time like this, even if illness is not a factor. I would urge you to take him in for a check - I'm not sure where in the world you are or if you already have an avian vet (VERY important in a case like this that it's a bird specialist) but the link below might help you find one ...
After a suggestion by a member, @Abu Colo, the Mod Team decided to create a list of veterinarians around the world who see birds. This was something we had discussed a few years ago, but the task seemed so large that we didn't get very far. However, the need is there and we decided that the time...
www.parrotforums.com
I hope perhaps a vet is able to help you!!