My boyfriend and I have had our Quaker, Gadget, since August. He came to us when he was two months old. Lately, he only wants to be handled by my boyfriend. If Gadget is by my boyfriend, he will be aggressive towards me if I come close to him. When I'm by myself and attempt to get him out of his cage, he fluffs up (the bad kind of fluffy) and tries to bite me. If I leave the cage open so he can fly around, he comes by me and will step up. Today however, I put him on my shoulder (normal thing for him) and he started breathing weird then attacked my face and neck.. He's never been aggressive towards me when my boyfriend was not home before. I'm wondering if anyone has any advice as to stop the biting and aggressive behavior.