Hatching advice for dry climates:
I had not hatched geese in the incubator before. I prefer to have them naturally hatched and raised and trained by their mother. But with this crow raiding, I figured I wouldn't get any goslings this year without hatching them myself.
I'm in the desert and the air is very dry. No matter how much water I put into the incubator, i can't get the humidity up. The birds will grow and start to hatch, but as soon as the shell is broken, their membranes dry out and the baby can't move. Fortunately, I learned that (the hard way) with turkey eggs, so now whenever the shell is first cracked, i wait until the next day and crack the large end off the egg and pull the dried membrane off the bird. Once the head is free I put the egg back into the incubator and let the baby rest and do the rest of the escaping from the shell.
The last gosling had his wing glued to the side of his face. He was still a little bloody and didn't leave the egg until the next day. But he is out and is a beautiful little guy with perfect markings.
When the egg is first cracked, the baby is not ready to be hatched. But once the shell is breached, the dry air can get in and dry the membranes out and shrink wrap the hatchling.
This should not be an issue in areas with high humidity or with incubators that hold humidity.