Well out of 9 eggs, I had 2 quitters, 3 nonviable or unfertilized. 4 babies hatched out! Unfortunately my one and only little Black Copper Maran did not make it. She was born so weak and never wanted to eat or walk. I tried my best to make her eat and drink, even made her shoes, but she would just cry and get weaker by the day.
Yet I still had 3 very healthy chicks, one pretty EE, and 2 beautiful Black Australorp. That would be a little over 1/3 of my eggs hatching.