1.) Hand raised or parents raised. Hand raised chicks won't be afraid with people, thus it's a good start to have it as a pet bird. 2.) Your time for taming the bird. Even if you have a hand raised bird, it doesn't mean they will kiss you, want to snuggle or like to be flipped over instantly. We still need to approach them daily, routine, hours a day and we have to avoid them being scared/lonely/abused when they are with us. 3.) The bird personality Each of them is unique like people. Even siblings can have different attitude & characters. Some are shy, some are sassy. Thus it will affect how they react to your approach.