I've candled my eggs today, its day 14. Two of them are certainly quitters, no good, nothing going on in there anymore. They were fine two days ago, I could still see movement. What causes them to die this far into the process? I've just never really known what the reasons could be. All of the other eggs are doing fine. I can still see them kicking in there! I have a few more that are questionable, not sure if they are dead or just hard to see what's going on in there, so I can't give up on them yet.