I have found that the ones that hatch later are the ones that have problems. Quail are the same way, anyone hatching after 17 1/2 days seems not to do well
I just wanted to share my amazing experience with my first hatch. I started out with 14 eggs from my own flock of 9 hens and one roo. All of the eggs were fertile and developing well and on day 12 I was candling and dropped one (#5) :( very sad and guilty felling as it was well formed and I had...