1. One egg pipped yesterday and the chick hatched overnight. None of the other eggs show any obvious signs of pipping... How long should I wait before giving up? 2. One egg had been pushed out of the nest sometime during the day yesterday and it was cold to the touch, no signs of pipping and no sounds coming from inside the shell - should this egg be discarded? 3. How long do I need to keep the mama and chicks separate from the rest of the flock?