My first attempt at incubating wasn't a complete disaster, I got five of twelve. I opened the ones that didn't hatch and found one that looked like it was fully developed, the rest were in different stages of development.most were "shrink wrapped" I think is the term that's used here. What causes this shrink wrapping to some, and not the others? I hand turned the eggs until lockdown 3x daily, keep the humidity pretty constant until the last week. These were pheasant eggs, and didn't have anything to candle with, I had one duck egg that showed growth early, and kept it until the pheasants hatched on monday, broke it open today and it had started to develope, but never finished. I'm going to clean the bator and put 36 pheasant eggs into it tonight.