I noticed an egg that had pipped. I checked on it in the middle of the night and it had made a big enough hole I could see its beak. However, I noticed it seemed to be sitting (the chick, not the egg) in yolk, or something yellow and slimy. This morning, I woke up and found it had died. Very curious as to what happened. Why didn't it absorb the yolk before it pipped? Could it have pipped before it was ready?