I have a baby pineapple green cheek that's turning 6 weeks on Sunday. He's likes biting everything now and has started biting me. I don't think he is doing it to be mean but just playing with his beak. How should I discourage biting? I have been flicking him on the head and yelling "NO" but it's not seeming to work. I'm new with this whole training baby birds so any tips would be much appreciated. Thank you!