This egg is a OEGB that's on day 13. It's under my broody silkie. I just candled it and it looks pretty good, I even saw it moving. My question is, is the air cell okay? It's not too big is it?
If it's under a broody don't worry about it . She'll adjust it accordingly to keep the water level in the egg balanced. I've hatched several whose air cells looked a little big!