I have hatched many chicks in my time, but this is SO weird. Today my broody hen abandoned her nest and I decided to take the eggs myself because they were just starting to pip. Short story: All three hatched with yolks hanging on Long story: The first egg the mom had stepped on or kicked. It had pipped on one side and the other side had a huge dent with blood coming out. I decided to assist her in hatching because this summer 60% of my chicks have died fully developed on the day they should have hatched. The white skin under the shell was SO thick! It took a long time to break. Then she had this really thick, really strong gelatinas substance all around her, which was also hard to break. She was born with a see-through stomach full of yolk, and a tiny bit still going in. She's still alive now (7 hours later), just lying in the incubator, having small muscle spasms. The second egg hadn't pipped to the air pocket, which I could see through candling. Not wanting to repeat history, I decided to hatch it. When I poked the air pocket with a needle this disgusting smelling liquid gurgled out. When I broke the shell there was this DISGUSTING foul smelling black jelly liquid. Just in case, I started pouring it out to see if the chick (which had been alive a few days ago) was somehow still alive. It was SO gross! I didn't finish pouring it out, just through it away, but it was goopy and green with black spots and the worst smelling stuff EVER. The third egg also hadn't pipped, so I did the same thing as above. I found it alive but not very spritely. I would break a few shells away every half hour or so, but after a few hours I broke an outer vein and it bled and died. :'(,' When I looked at the full chick it had a HUGE sack. The fourth egg was also pipped. It just now hatched with a yolk bag the size of a marble! Otherwise completely normal and active. Does anyone have experience or knowledge about this? I would really appreciate your advice.