My cockatiel is 8 weeks old and I am still hand feeding him when will I need to stop this? And when I have him sitting on my shoulders he makes a strange noise he just started the noise. Kind like purring in ways I don’t know how to explane it But why is he doing this am I doing something wrong. I also want him to talk and whistle the Andy Griffith tune but I was told that I have to get him to talk before he whistles is this true?Please help me on my bird. I am new at this and so far I really enjoy him but have alot of questions. Thanks so much.