Two years ago I bought my son a parakeet. He was hand raised and a baby so he was really sweet and would sit on your shoulder, play in my hair.... real cute. One day, my father thought it would be a good idea to let our outdoor cat into the house and I walked into the room to find the cat hanging of the bird's cage. Since then the bird has changed and bites and goes crazy whenever you go near the cage. My DH and myself have tried to talk softly, put our hands in the cage and not touch the bird but just hold it out so he can come on it but he bites. Do you think you can retrain a bird?