Ok my first attempt didn't work. I have a still-air syrofoam incubator. I cracked open the eggs in the first batch and several had baby chicks and some full grown chicks that never hatched out. I let it go probably 27 days. So, I've let the eggs build in the coop, and pulled them out today. The oldest eggs are probably 3 days old. Now, I am going to mark them, and take pictures. Be back soon.