Today is approaching the end of day 21. I have 42 silkie eggs in the bator - 12+ have hatched out. Everything went PERFECT this go around - so I'm a bit surprised that more hasnt hatched, yet. The 12 I have started hatching late on day 19. So I should remove some of them, if not all tomorrow to the hatcher....... So, how are you SURE the other eggs are duds? I would have expected at least a 50% hatch, since everything went so well this time. Thoughts?