I have a Buff Cochin Hen named Mattie who is on day 19 of sitting on Ameracauna eggs, I didn't know that she was broody, so I just kept collecting her eggs. She gets off them, rolls the eggs around from one end of her broody-pen and then she will tuck them under her. She was off one on Sunday and didn't pick it up. I checked the egg, and there was a chick inside. What do they usually do. I have only had one other hen lay eggs, and she was a Bantam Cochin, I never saw her off her eggs, I only saw her off when her two chicks hatched, so I am baffled.