I have got eggs hatching right now. Some Serama eggs and 7 black copper marans. The incubaor is in my room so I woke up to the sound of peeping. Looking into the window I saw thee chicks looks like a Serama and a black copper Maran and another smaller BCM. Looking around still, I spot the Serama's empty shell and the 1 BCM shell but no other shells, to be seen. I still have more hatching so I cant open it up but I have looked VERY careuly and none of the othe eggs are hollow! I think maybe both BCM babies came from a single egg!! If so they grew and hatched normally on their own, one is just about 1/2 size of the other.