I'm joining the party a little late but I have 3 RIR X White rock eggs in the bator now. One is a double yolk I made a boo boo on. I thought they were dead, but nope, at least one baby is still alive. He's making it so far. Only have to get through 5 more days. These eggs are special to me. They were the first eggs that my hen laid. And she was one of the first chickens I have ever had much less one that was laying. Sadly, my roo's that I had separated from the hen's got loose into the hen pen and the Daddy roo (aka. Big Daddy) didn't get to them to them in time to stop them and she was killed due to over mating.