Were those shipped eggs? I recently had two hatches that both had deformed chicks. The first was DIS and when I opened it I thought perhaps I had messed up opening it up and caved in one side of the beak. Flipped its head and it was identical on the other. So strange. The next hatch I had two that had completely deforemed heads caved in to the shape of the wing, eyeball must have been inside brain that's how caved in it was. Beak lengths were mismatched and crossed, one couldn't even pull its tongue in but it was chirping and they seemed normal in energy and everything. I knew even if I felt sorry fo them they would never make it since they couldn't eat or drink so that was my first time culling and I really regretted assisting them, but I guess maybe it was better that I kill them quick then have them die slowly in the shell. Anyways these were not shipped but they were of unknown age as they came from a very large clutch of hidden eggs that I found. So perhaps the age of the eggs was the cause. Everyone else hatched fine and normal. What is your theory on yours?
Not shipped. My eggs from an established, yet still young flock. A first-time broody was sitting on them, so the egg only left the nest for me to candle on 3 or 4 occasions. But I have incubated and sold many dozens of them with success and nothing like this, so I'm 99% certain its not genetic.
My theory - a little background first. This broody started sitting about 6 weeks ago. The first batch of maybe 6-7 eggs, nothing hatched (several made it past day 14 though), so I only gave her 4 more eggs (not knowing if she would tough out another 3 weeks), and 2 hatched. This eggtopsy was one of the 2nd batch that didn't hatch. The first batch were mostly scrambled when I opened them, or just plain late deaths, I thought. Oh, and one of the other hens had broken an egg on the first set, so they ended up pretty nasty. See, these birds are at my farm, and while tended to daily, they are not monitored constantly by me, so I could not separate her and be able to let her out as much as she would have needed. She picked a nest box, and I left her there. The other hens continued to contribute to the nest and I removed the extra eggs. Momma would get up when the other hens came around, so I think it was the other hens jostling the eggs around that did them in. Plus the heating/cooling/heating/cooling of alternating hens in the box, I believe played a part. It took the other hens a good week into the second set for them to start laying in other boxes. I think the broody finally put her foot down! I'll have a better plan if another one goes broody, for sure.
And just another side note -- I set 6 eggs in my incubator just a day before she started sitting the first time. 4 of 6 were fertile, 3 of those 4 hatched and are happy and healthy still. The last one was malpositioned and I waited too long to help it. Upon eggstopsy, it looked perfect. Just upside down.
Sorry for the book.... lol