Cerise1924
Crowing

Short story: My 4th Maran is out! I ended up making my first assisted hatch.
For those interested in the long version: The egg got rolled into a position where I could finally see what was going on. I could tell that it really wasn't turning and zipping. It had made one big, wide, hole with its beak, and all further progress was because it was splitting the egg open by sheering pushing. Because of the huge air sac saddle running along the side of the shell, I think it was simply too big to turn in the remaining space. The membrane was turning brown, the feathers sticking through the gap were dry, and it had been pushing away for over an hour with no further progress.
It didn't do anything fancy. I took out the egg and put it on a warm towel. At first I chipped carefully away with tweezers, but it was soon very clear there were no blood vessels. So I just pulled the egg slightly further apart at the split line the chick had already made, and put it back it. The chick immediately pushed it completely open and crawled out loudly complaining that it had enough of that shell! It's bumbling about the incubator with the rest of them now.
I guess it's possible it could have pushed itself out eventually, but hearing @WVduckchick stories about partial-zip deaths, I'm very glad I helped.
Thank you so much for all the helpful advice and encouragement!

How is the Orpington doing?