I have some bantam cochin eggs for this weekend. They were shipped to me, I think they were scrambled when I got them because the air cell moved in most of them. Then my old incubator had a temp spike. So, we have one egg that looked good, saw movement but then nothing and three eggs which have funky air cells. All of them are dark and I can see the air cell when I light carefully through the top. I'm not turning them anymore hoping that helps.
I did perform an eggtopsy on one that I pitched, it had a tiny fetus with big eyes, thought maybe it died in the first 5 days. I'll probably keep these in the incubator till they are on day 25. If any of those hatch I'll consider it a miracle.
I added 4 red sex link eggs yesterday. Not sure of their fertility, hoping to hatch something!