Ooh!!!
In the hour or so I was away from the incubator "my precious" started to zip!!!
NO! Not yet out!
Also, it only managed to unzip one inch, so I do think he is just in there wrong, or maybe he is 'shrink wrapped'
Also, after all that time with some of the membrane exposed, the exposed membrane turned a bit yellowish. My RH is at 70.
So, I went ahead and gently removed a line of shell all the way around....like he would have done had he unzipped himself. The entire time I did it, I moistened the membrane, there wasn't a single sign of blood or capillaries. So, I do think he is 'done' and just having trouble getting out.
I wrapped him in a moist warm paper towel and back into the incubator.
I am thinking another three or four hours and if he still isn't out I will try removing some of the membrane.
But, now the question......does that mean everyone else will be stuck? I have three other pips now, just sitting there. OK, they are peeping on occasion, but no other zipping.
That leaves three other eggs that haven't done anything at all yet. I very gently picked up the eggs that have no pips, without rotating them, and gently tapped on the air sack end, no peep. I would guess that means they haven't pipped into the airspace yet.