I can imagine with a cockatoo it would be really hard to discourage that type of behaviour, eh? At least, I think conures are more widely social. I know Libby, my GCC, wants to feed Toby my rose-crown, but she is super buddy-buddy with everyone. I hope the same for my nanday... I do not mind that she is closest to DH I just don't want her attacking others that come near. Which has not happened yet and she will happily spend time with me but he looks for him if he's out of her sight. I think I may try working with her on some basic tricks as a means of interacting with her intellectually.