Earlier today I removed a duck egg from the incubator... it was weeping, had cracks in it, and looked like an accident ready to happen . So this evening when I was checking the incubator temp and humidity, I saw another egg that looked like it was ready to blow . I quickly opened the cabinet and pulled out the tray, thinking I'd check all the eggs. To my surprise, my "exploding" egg turned out to be a 4 day early duckling! The eggs will be moved to the hatcher tomorrow. None of the other eggs have pipped or give any indication of an early hatch. Plus, the temp and humidity are right where they should be. Dang over-achiever duckie, I guess it just couldn't wait to hatch . I had to quickly plug in the hatcher as I'd turned it off for a good cleaning.