I just hatched one chick this morning (22 days). There are no chirps or movement or pips from the other 9 eggs. How long do I continue to incubate the other 9 eggs? Is there a way to check them before I pull the plug on the process? I have heard people tapping on the egg or some such. Does that work, and what will it tell me? The hatched chick is running all over the bator and rolling the other eggs around. I have not taken it out because the bator is in "lockdown", but that can't be good for the unhatched eggs? Your knowledge is most appreciated! Thx!