I have 4 eggs in an incubator and 2 of them I can see the little external "pip". I can hear tapping and peeping noises but how do I know if the other 2 are internally pipped or not? I can't tell which egg the noises are coming from. Also, some people say that you may need to add moisture by misting the eggs...I thought once they do the external pip that you are absolutely not supposed to open the incubator. 1 more question...is it 1-2 days from the time of the external pip until the time they should be out of the egg? Thanks for the info..I have read so much it is all blurring in my head. My husband had to go out of town unexpected trip so now I am handling this on my own for now and I'm stressed!!