I had the oddest thing happen. One of my Icelandics hatched with a ruptured yolk sac! The poor thing had dried yolk on it's head and the rest of it is covered in wet yolk. I don't think it will make it but it is sure trying. What a mess. There was only the tiniest bit of blood, all the rest was yolk.
I'm so sorry that happened, poor little chick. I had one too, but it was a duck, and didn't make it. I hope yours does.