Day 20 silkie eggs are pipping the shell but seem unable to break through the membrane. 2 eggs started yesterday and 3 more today. The membranes are opaque white. I've had them at 70% humidity since day 18 but they seem to be drying out. The incubator is homemade forced air and the temp has been steady 99*. It's been a least 20 hours since first pip and no zipping. I'm afraid of them suffocating. What should I do?
