thanks guys. I took the little guy out and put him under a light. That yolk looks like it is part of his body. I guess I never really knew what happened when a chick hatched, regarding the yolk. I had one hatch this morning with no problem, and another almost out. I don't feel too positive about my other eggs (no pips yet) because the elec. went out two times during this incubation! The last time it went out was on day 17. It was out for 12 hours. I was at my Mom's for the night (mother's day!) so my husband was home. There was nothing to do but see what happens. I'm not sure how much temp. affects hatching on day 17, but I guess I'm lucky I have at least one!