We just opened it to see if we could help it out but it was already dead. It was perfectly formed and still had a yolk sac slightly larger than it's head attached. There was fluid in the sac. We have had 3 hatch out of a batch of 5. We're opening the other one up too now as it is probably dead also. In fact whilst I was typing this, my husband opened up the other one which is exactly the same. Does this information tell you anything that you can tell about why these chicks died? Could I have done something different?