I don't know what is going on here, and I'm hoping someone has an answer. My first batch of Bielefelder eggs began hatching on 3-31. 5 eggs of the 9 were previously refrigerated, and only the refrigerated ones are having problems. Also, the first 2-3 days I had trouble getting the incubator temps up--they kept dropping to the low 90s. Humidity was 40-50% the first 18-19 days (Naturally too. Very humid climate here), then about 60-70% until now. Of the first 3 pips, one broke out on its own, one pipped from the small end and had to be helped out. She popped out more hyper and active than the one who hatched itself! The third made a first pip and waited 8-10 hours, at which point I carefully chipped away at the shell. The inner membrane was very dried out, but still had blood in it. I dribbled warm water onto the membrane, careful to keep it away from the beak. Most of the veins receded, but hours later, the chick showed no sign of wanting to hatch. I chipped away about half of the shell and then left it for the night wrapped loosely in a warm wet towel back in the incubator. There was a drop or two of blood lost from veins that refused to recede. He was out by the next morning (yesterday morning), but was very weak and kept getting stuck on his back due to a very fat swollen belly. The swelling just got worse and worse all day long, even in the head and neck. He couldn't even open his eyes or pick up his head by the time we decided to end his misery last night. He never got strong enough to even walk. I now have another one that did the exact same thing. A single pip, no further progress. I let this one go nearly 20+ hours before I chipped away. He was also shrink-wrapped into the inner membrane, but I wasn't about to make the same mistake again, so I only wet the membrane and left him wrapped in the wet towel. Finally he hatched, but he's swelling up now too. He's just lying there in the incubator now. I think we might have to put this one down too. What the heck is going on? The skin is so stretched from the swelling, I can see through it in some places. Is this preventable? Is it due to the low early temps, or the refrigeration? Or could it be a genetic defect of some kind?