If none have pipped, you could candle to see if there are any movements. If there are no internal pipping and no movements you can try the water candle test. I hold mine up to my ear and lightly tap at the air cell. a lot of the time you will get movement or a tap back, even a peep if they have internally pipped.Day 23 on my hatch and nothing. Yesterday they were moving. What should I do?