NelsonMandela

Hi, i am really hoping you guys can help me. Its about feather plucking, which he started about a month ago. Its not just the one as you can see from the pics on the profile it is getting pretty bad. I have tried to help him, regular showers, chaning his toys in his cage to keep him occupied, health food, but he is still doing it. He does seem to spend alot of his time preening himself, is this normal? I've been told if you smear vaseline on the areas he is plucking he will stop, but this just seems wrong. Has anyone heard of this? I read the artical on 100% Aloe Juice, which im going to try Thanks in advance for your help.