Hello.. New to forum. My past two cockatiels were sweet and friendly, but #3 has been a challenge and I'm not sure how to resolve. She was hatched 4 months ago and I have had her 2 months (I lost my sweet 15 yr old so thought I'd get another). She loves her toys.. Plays viciously .. Very active. Her 'sounds' are not like the other 2..she gets loud and shrieks or yells. My past 2 sounded much happier. I get near the cage and she hisses or puffs up. I have trouble letting her out.. Doesn't want to come out.. Have to take her out.. Which I've stopped doing as she gets terrified. Any advice how to get her to trust me, like me.... Be friendly? She IS probably youngest one I've had.. I'm hoping she will get past this. So lost. Any help much appreciated!