This is my first hatching, but my second incubation. I set some eggs before this, but I think those were too old as none of them were developing at 10 days. Plus I was selecting them for the largest size and weight, I didn't know about proper screening. This time by screening my eggs before setting them I avoided any eggs with the large visible pores and stayed with normal shaped and sized eggs. I set 9 eggs in my Cooler 'Bator and they are due to hatch tomorrow late afternoon/evening. I woke this morning and at first I was worried. One of the eggs has a small square crack (actually it looks like a piece of shell is stuck onto the egg). I scoured the 'bator, looking through the plexi-window with my flashlight for how the egg was cracked. Then it struck me and I felt a little more retarded . There is a chicken in that egg and it wants out. None of the other eggs have pips on them yet and I don't hear anything either, but at lockdown two days ago all nine looked good. Can you find the PIP ? This is my second experience with chickens, had some Buff Orpingtons last year but the city (Youngstown, OH) made me get rid of them. Now I'm renting farmland in Amish Country for my old mcdonald farm, and I'm starting a flock. These are Black Australorp's the rooster is very pretty and has incredible coloring and feathers. Will try and get a picture of him today too.