So my hen, Edna, has been sitting on about nineteen eggs that I have periodically been checking with various methods such as candling (which has shown some success). I first noticed her sitting on August 1st, but I'm not sure how long before that she had been so I said July 31st just to be safe. Today I checked on her nest (while she was out grabbing a bite for three seconds) and there weren't any pips or any sounds (at least, I could have sworn I once heard the faint sound of tapping but when I listened hard, it was gone). I'm very sad right now as I am wondering if nobody made it. Is it possible that I am off and today is actually day 20 and the hatching will commence tomorrow?