Ok, I just got done with the worse and most traumatic hatch of my life last evening with Wheaten Maran eggs. My husband thinks the parent stock must have been inbred to cause the vast array of issues. I'm going to be scarred for life, is all I can say. I've hatched A LOT of birds, and I've never seen anything like this. What causes... Cross beak? Missing eyes? Backward legs super loose in the joints? Large swelling at the base of the skull? Curled toes as if they're claws? I didn't open anymore eggs, I didn't want to know what was inside. Several we had to end quickly, it was just... too bad. That's where the scarred for life thing comes from. Splay leg is one thing, but this..... this was... traumatic. You all have no idea how awful my weekend was. I was SO excited when that first chick popped out of the egg and started running circles in the incubator, on a mission for life. Her name is Perfect, since she's the only one that is. 3 other chicks are in the brooder, I have low hopes for one, it has swelling at the base of the skull (some what reduced today and it can lift it's head) and one leg has.. claw foot? I don't know the terms for this stuff. The toes are curled in on themselves and it doesn't seem to have mobility to them. It has until tomorrow afternoon to make improvement when the yolk sac is pretty well used up. Vitamins have been added to the water and I try to work the foot and have the leg splinted straight. 2 others.. one was somewhat lethargic but otherwise appears fine. It was quite perky this morning so I have high hopes for it. The other, had legs going in the wrong direction at the hip joint when it hatched. It was also on the wrong end of the egg. I put the legs where they needed to be and set it up in a tray in the incubator for 24 hours. That helped it SO much, and it now has mobility and can stand. It's still working on walking, but it's much improved. The only one that cries is the one with the swelling and claw foot. The others haven't shown any distress at all. I am... exhausted and traumatized. The worse thing I have ever seen before is splay leg and one blind chick years ago. But this... I don't even know. I used the same incubator and the same methods I've always used. The only thing different was the eggs. I did have an issue with humidity running too high but that's nothing new either, I always battle humidity. The results were eggs that never pipped and the ones that did come out were sticky. Never anything like this. Of the 7 eggs I opened, only 2 others seemed fine. The rest... ugh. I don't want to talk about it. I just tossed the rest last night, I didn't feel curious anymore. I felt angry and sickened.