So... One of my girls, a bantam started sitting, so I put some eggs under her. Yesterday, I noticed her "sister" sitting with her....Now they sit together. I originally put 9 eggs under the broody, i can't find one of them and I accidentally picked one up and noticed it too late (and it cracked) and it WAS developing!! Can i put more eggs under them? How long will they stay on the eggs once they start hatching? I am 7 days into the hatch. Also, if I buy some day old chicks to correspond to the hatch date...how many will they accept???