Paco and I have reached our one year mark. I can't explain it. He has now just accepted me. He lets me change his water bowl, (a locked one further back in his cage) I spent the entire year being patient, talking to him and setting boundaries. When I lean in to clean his cage and he is on top of if, I raise myself up and say, "no bite". Trust me, getting slammed on top of the head by a parrot is not fun. He also hates it when I close the curtain behind his cage. I just stand up straight and tell him, "NO" I have learned he is not stupid. I do the same routine over and over. Paco cannot fly, sadley he does not know how to. I have just stuck to the same habits every day and will not let him bully me. I hope this helps. I had many moments when I was ready to throw in the towel, don't give up.