I bought six call duck eggs and only two wereviable. One looks normal compared to all the pics i have looked at and the other I dont' know?! This is my first hatch ever. I thought I had a detached air cell because the sac was on the side of nthe egg. I put the egg in a cup in an upright position and got the sac to go towards the big end. I then took the cup out and used a pencil to mark the air sac and the one on the egg with the detached air sac is bigger than the other one. Is it possible it is just ahead of the other egg/ If it is what do I do about turning and the humidity? The first egg looks like it is on track withthe count down and the other is about three days ahead I think. I am not sure I think I will take pics and post if that would help. Thanks