Excellent information from Sterling. I am no pro but I can tell you that be it baby, rehome or rescue, these birds are very much individuals. One of their attractions is they have so much personality! From my own experience and what I have read here and other places, you will not know the bird's temperament, personality and quirks (whether baby or older bird) until you have gotten to know them and they have adjusted to your home environment. Most of us love them anyway, just the way they are. It is like having a child... you can't guarantee if your baby will be affectionate, reserved, clownish, shy, etc. etc. as they mature, but you love them anyway.