Up until now, my hatches (Genesis 1588) have been pretty predictable. I have always used the egg carton method. The early birds hatch on day 20, the bulk of them pop out like popcorn on day 21 and the stragglers hatch on day 22. By day 23 any unhatched chicks have always been dead. But this latest hatch has been really weird. They were due on Tuesday. On Sunday I went to set them up for lockdown (a day late, I know, but I was out of town) and found that a baby had hatched in the turner! Okay, no big deal, none of the other eggs had pipped so I took them out of the turner and increased the humidity to 65%. This time I didn't use egg cartons, just placed them on their sides. A bunch of chicks hatched on Monday and a bunch more on Tuesday. On Wednesday I removed them so they could eat, and left the incubator running. There were no pips when I opened the incubator. Soon afterward, three more hatched, or tried to, and got glued to their shells. I helped them out bit by bit over the course of many hours, keeping them wrapped in damp paper towel, because the membranes were bleeding. These chicks looked "shrink wrapped" to me, with the white outer membrane wrinkled and wrapped against them. Today all three are vigorous and doing fine, although sort of "sticky" and not as fluffy as the others. Tonight I took the unhatched eggs out and cleaned and disinfected the incubator. Then I sat down to eggtopsy the unhatched eggs, and one of them had pipped! I gave it a bit of help because it had been sitting out in the cool dry air for a couple of hours, but the membrane was bloody so I put it back in the incubator, wrapped up, along with the rest of the eggs. Within half an hour it was free of the shell, with very little blood, which was a great surprise. So now I'm looking at the unhatched eggs and wondering what is going on in them. This hatch has been straggling along for 5 days now! Any ideas on what would cause this?