Tucker, my cockatiel (before snowy, and he is still with me), is pretty quiet. He only makes noise when he wants attention, which is... all the time. He doesn't like lying on his back, but he just *wub* being scratched on the neck! He'll walk up to me and put his head down and wait, which is a sign to start petting! He is very gentle, and never bites. He does this little 'peck' when I pick him up, and that consists of a little squawk and dragging the top of his beak along my finger. When you don't know him, it looks like he's trying to attack you, but he's not. It's his little dominance display, and it's as far from pecking as it can be. Tickles, more like it. *wub*