I candled eggs on day 21. There was no movement in egg, no chirping, very large air sac, and no veins visible; only a large dark mass existed. It had not pipped internally or externally. Its face was pointed toward the pointed end. My gut feeling was it was dead and it was. This was chick/egg #3.
Chick/egg #4 appeared dead like #3 (same data from candling). I investigated only to see if the problem was same, but the chick wasn't dead.
I believe I had eggs pointy end up in egg carton for the fist 18 days. Does this explain why the chicks #1 and #2 were not positioned to pip in the air sac end? These chicks were able to pip and hatch unassisted.
I suspect the remaining chicks' beaks are pointed opposite of the air sac. With this in mind, do I need to put a small hole in the air sac end? Do I need to candle again today for movement? There are no external pips today and no internal pips as of yesterday. Thanks.