I had 8 eggs under a broody hen (actually two broody hens who are both dedicated setters). One egg began to pip and to hatch, but ended up crushed beneath one of the hens (this was day 20). Today is day 22, and I see no pips, absolutely nothing in the other 7 eggs. How long should I wait before I call it quits?. I'm a first timer, as are my girls. We are so sad.