The eggs under my broody have large air cells on day 4. The last egg under my broody had a HUGE air cell, but still managed to hatch. Why is this happening!? If I'm seeing this right, the air cells are how they should be on day 11 or so. Is it maybe the bedding? I've been wondering it maybe the cedar chips absorb moisture or something. Please help, I really want these babies to hatch!