Here is an enigma. I have one egg that is developing from my shipped eggs, It is due to hatch on 12th. When ever I incubate shipped eggs I put in a few of my own fertile eggs for a control. I have about a 99% hatch rate on my eggs. anyhoo, here it is. The Danver egg looks to be about a week behind the control eggs in development. It is moving around in there so alive, just not growing.