Update: My wrong-end pipped is now my only remaining chick.I went to bed at 12:30 am and got up at 6:00 to check them, and in that time I think the humidity got too high - it was 75% when I came out. The non-pipped egg had pipped but not made it. The pipped egg had almost all the way unzipped but also didn't make it. I wish I'd left them for three hours instead of six. I feel terrible.
The wrong-end bird is still alive, but had made no progress since 12:30. Even with that high humidity, the outer membrane looked brown and tough, so I just took her out and very carefully chipped off some of the shell and peeled back the outer membrane more. The inner membrane looks clear, but I hit a tiny vessel and saw blood, so I stopped that with a wet paper towel and put her back (with the humidity down to 60). I'm going to see what she does over the next hour or two.
Sorry you are having troubles and don't beat yourself up on not checking in 3 hrs---it probably would have not made a difference.
Why do you feel 75% is to high?? I hatch 1000's and 1000's at 70 to 80% with 95 to 100% hatch rate. I sure do not feel 75% is to high for the hatch.
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