Thank you for your reply. We monitored the parents and baby all Sunday and decided to contact a vet because we were concerned the baby might get cold as the parents weren't nestling it or feeding it. The vet was brilliant and offered us some fantastic advise and we left it as long as we dared before removing the baby from the cage. We made a brooder type box to keep it warm and have been feeding it every two hours since then. Little peanut (we have named him/her) is doing well so far as is the correct weight. We are making sure to sterilize everything as well as I understand from the vet that they are most vunerable to infection at the moment.