Ok, so i was given Pickles a one year old green cheek from a friend about a month ago. Now the first few weeks were good he was friendly and love coming out of his cage. Recently(2 or 3 weeks now) he has started being very aggresive in his cage biting or trying to anyone that goes near the cage.... how do i stop this i have tryed everything new toys, changing the cage up and treats nothing seems to work little help here!