I have two eggs left in my incubator that haven’t pipped. The other 13 have completely hatched. It’s now day 22. So I float tested these two after I candled them. The first one I candled and it has a huge air sac and there was no movement an no sign of internal pip. I did the float test and no movement. Deceased I believe. Then I candled the second one. I can’t even see any amount of air sac and I couldn’t see movement. So when I floated it, it started rocking and then I could faintly hear chirping. Yay, alive!! But why can’t I see any of the air sac? Is this a problem? It’s been a couple of hours and I can still hear occasional chirping in the incubator but still no external pip. Any help is appreciated. Thanks!