We ordered and picked up 6 Muscovy eggs from a hatchery in our region. All 6 eggs are fertile, but for some reason on day 6 of incubation, one of the eggs developed a detached air cell. I have had the egg standing in a toilet paper core ring since that time and have tilted it at least 3 times daily in a varying direction. When candled yesterday, now on day 16, the air cell is still detached. The duckling is developing normally just as all the other ducklings in the eggs in our incubator. Has anyone ever successfully had a duckling hatch with a detached air cell? Other than keeping the egg upright and just tilting it a bit several times per day, is there anything else I can do to try to help the air cell reattach properly? Thank you for any help.