All those eggs look fine, but remember the chick is filling the egg. So only the air pocket is going to light up. By now you probably have chicks. I've seen chicks take three days to hatch, hence the reason for the safety holes. But I've also seen eggs that were hatching and then die before they...
I've been thru much over the last year hatching eggs. My eggs will begin to hatch starting now. Already two of them are chirping. When you candle the eggs, you can look for a triangle shadow appear and vanish from one point of the dark area. This is the chick trying to break open the shell. For...