My one duck was sitting on eggs and something came and got her, so I took the eggs inside and put them in an incubator. I don't know how old the eggs are. I know there fertile because I shined a light on them and I see stuff in them. But I can't make out if there alive and how old they are. When I woke up I saw a small hole in one, but I can't see in to the egg. I did some recherché and found out it might be a peephole. But I don't know for sure. So I want to know what a peephole on a duck egg looks like.