We put six fertile eggs under our broody bantam cochin on the evening of September 22nd--exactly 14 x 24 hours ago this evening. Not sure if that makes this day 14 or 15. Five of the eggs look the way they are supposed to look: they are 90% dark with a tiny amount of veiny part showing plus the air cell. But Egg "C," which seemed to have a small amount of porousness at the top (pointy part) and also a bit of poop on it, looks small, like a 10 day old chick or even smaller. It's jumping around a ton though. I'm worried about it and sad. Any information about this? Has anyone had a situation like this? I'm a first timer and this is a sweet and exciting experience for our family.