Hi guys just an update . I candled my eggs today and all but one still seems to be alive .the noticable difference this time when handling is that I can see the chicks have broken into the air sack in the eggs and I can see the beaks pecking at the inside of the egg. My dates to hatch would be correct with the progress but I'm just wondering when I should expect them to pip now that they have broken into the air sack . Should I expect any more progress tomorrow or should I candle agian if there is no change??
How long it takes for them to externally pip after the internal pip depends on a few factors, but for me, I tend to put a safety hole in each of my eggs about 12/16 hours after the internal pip, this is simply to ensure the ducklings don't run out of air. I do this about every time with my Calls, but I still do it with other ducks breeds just be on the safe side. After 12/16 hour-ish after the internal pip and there has been no external, the duckling isn't pecking the shell, I'll grab a sharp sterilized brad point drill bit, position over on the air cell end of the egg, and gently position the bit on the shell and start twisting back and forth until a very small hole is made, once the tip of the screw punctures there is no need to continue to widen the hole. You may practice this on a undeveloped eggs first.
Best of luck!