Hi, I have 80 eggs due to hatch in 3 days(27th), this morning I went to move them into the bottom hatcher when I heard "peep peep peep", I looked at the back of the incubator and their was a Tennessee White Muff chick completely out of the shell and almost completely fluffed out. What on earth happened? Why did it hatch so early? I have a Sportsman and the temp and humidity was spot on through out the incubation. All help is appreciated!