Hi there in answer to your questions.
The baby is fine nothing wrong with it at all, no splayed legs etc. I did plenty of research before breeding and have keep a good eye on them. It is the same size as the other baby. I must say that I have not seen mum or dad go inside the box they sometimes sit on the perch outside (mainly dad) and the baby will come over to them, although I am not sure if they are still feeding it as I have not actually seen them feed it like I have with the other one, I assume they still are as its crop looks full.
Yes I have had it out of the box and it is quite adventurous when it is climbing up and down my arm.
Thanks in advance for any help.