I need some advice here please: I am hatching 7 eggs with my broody hen. Yesterday was day 21, only one egg hatched the chick looks great. No action from the rest. I just read how I shouldn't candle them at this point, so how long would you wait before crying, umm...I mean giving up? I got them from my pet chicken, never did before so I am unsure of their hatch rate. Thank you! Oh and is there anything I can do now to tell if they are chicks in those eggs?????