I'm hoping for some advice: I had a hen who was sitting on a clutch of eggs but they kept hatching and dying; I found the first dead outside the nest, another one had an unabsorbed yolk sack and herniated intestines, and the third looked as if it had been pecked. I removed the two remaining eggs to an incubator. A neighbor suggested that the mother may not have been turning the eggs and the chicks have been sticking to the shells. Does this sound likely? If so, should I monitor the incubator to assist when they hatch? What would I need to do? How long will it take for them to hatch or for problems to emerge (ie, how often do I need to check)? Any advice or suggestions would be welcome. Thanks!