So, I know I had 9 eggs under my broody hen. Today I had two chicks hatch. There is only one egg shell and there are still 8 eggs left to hatch. Is this possible? I have counted the eggs several times. I know how many were there this morning. Even if I had miscounted (which I didn't ) why didn't I find a second egg shell? I have opened eggs with two yolks before so I assume however unlikely it may be this is possible?