Let me tell you something I have found about GCCs: they have a completely undeserved reputation of been nippy and moody! In my personal experience, if they get good care (solar spectrum, good diet, good light, lots and lots of out-of-cage time, hours and hours with their human, etc), they are the sweetest, easiest birds to keep. I only have one now because I rehomed the other three I had taken in (a male and a female went together as a bonded pair -they met in my house- and a handicapped male that I rehomed to a couple where the lady is in a wheelchair so she stays home almost all the time) and she is the sweetest, sweetest thing! She is so very mild-tempered that she is the ONLY bird I allow my grandchildren to handle because I know for a fact she will not bite them. She doesn't bite, she doesn't scream, she is in perfect plumage, she is a great eater, bather, kisser and cuddler and would go to anybody who puts a finger out to her!

I had rehomed this bird (and her boyfriend) to an in-law and she ended up with stress bars all over her back because she wasn't been handled enough (I took her back when I saw this) so, although they can be the easiest birds, you do need to pay a lot of attention to them.