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My eggs are all pekin ducks. And my temp has been 99-100 and humidity for the most part 55%-57% - there was once I had a little trouble bringing the humidity back up when I got rid of a porous egg but when I finally added hot water instead of room temp water it came up just fine. And I haven't taken them out since about 10:15 or so last night. That is when I took that pic but was concerned of the shape and if it would make it.
I wasn't sure if it was an actual pip though because its more of a "crack" and isnt like poked out. Its still smooth. I have been keeping an eye on things but have not going into lock down just yet.
Okay, to me, from the picture, it appears that the duckling has internally (and probably externally) pipped. You have said that multiple eggs have cracks and you have also said that the cracks are from the inside. That indicates they are pipped, unless you have some other explanation for how multiple eggs got cracked. Without being there to see what you are seeing though, we are limited in the advice we can give you. I can tell you though that the egg appears WAY too dehydrated for a Pekin egg at day 23. Something has gone wrong somewhere and probably with both temperature and humidity. I would seriously calibrate your thermometer and hygrometer and/or double check your dates. If it is honestly day 23, your temperature has been too high and your humidity has been too low (or you inadvertently dehydrated them too much by spraying them).
You have to go by your results, not some arbitrary numbers someone has given you online. The air cells should take up about 1/3 of the egg going into lockdown. Yours appear to have lost more moisture than they should, which can be the result of numerous things. I also read on one of your other threads that you have been spraying the eggs. That does the opposite of what most people would automatically think. It actually dehydrates the eggs MORE. At any rate, in my experience, once they have pipped, it is too late to worry about what the humidity has been. You need to worry about what the humidity currently is and get them into lock down if they have really pipped. We can only go by what you are saying and you have said A. Multiple eggs are cracked and B. You hear peeping and tapping. That would seem to indicate they are hatching, even though they are obviously early or your dates are off.
Again, it cannot be stressed enough, go by results and what you are actually seeing. Do not go by arbitrary numbers quoted or even by what you are seeing on your gauges. Instruments like thermometers are known to fail and typical numbers quoted cannot take into account all situations.
