Horrible stinky sucky hatch the last couple of days. 3 chicks zipped all the way around the shell and then died. 4 didn't even try to do anything. Still have 1 little Barnie chick working on getting out and 10 Barnie babies running around with 7 fluffy Marans.
Pink, a couple of VERY knowledgeable and experienced breeders commented on the purple/green sheen thing over on the Ameraucana thread, yesterday, I believe, so you won't have to scroll back far. You might want to check it out.
I've also had 2 sticky hatches this year. Results much like you describe. Silkies and Ameraucanas.

