It was just the yolk sack that had gotten bloody when he pulled himself out of the shell.... after it had dried up and started turning colors so I knew he was not getting any more from it, I cut it. About 30 seconds later, he crapped on me, so I think he is ok. I had to give him a warm water...
I just had a chick hatch, it has a sack attached, but it is all red/blood no yellow.... I didn't find him/her until it was starting to dry up a bit as we were gone for about 2 1/2 hrs.... I have it sitting on a damp paper towel in a cup.....back in the brooder.... he/she has some blood on his...