I see. I hope it develops into a happy, healthy chick. I personally would never set eggs with cracks in them, because there's too much that can go wrong with them. Air cells will grow too fast, and/or bacteria will infect the embryo. You'll have to keep us updated on it's progress... as well as the others of course!The cracks are right over the air cell, so as the cell grows, it will cover the cracks. One whole crack is covered already.