I have two peafowl eggs, that were in the incubator with three others (2 peafowl, 1 turkey). A week apart. I moved the two eggs to another incubator, while I locked down the three. Both incubators are Little Giants. I incubate at 60% and hatch at 80%. The three eggs hatched perfectly and on time with healthy chicks. But when I moved the two eggs back into the hatching incubator, their air sacs were huge, They had seemed to be developing OK until the end, then all of s sudden, huge air sacs. I could see the chicks moving in both eggs. I'm pretty sure one egg is dead. I can see the chick in the other and hear peeping and a little "ticking". What do I do if it never pips? Should try to break it out myself after 2 more days? My research tells me that if the air sac is too big, chick won't be able to get out of shell. I am worried, because the other egg didn't make it. I have helped some chicks out of the shell, but that was after pipping, and taking a long time to come out. And they had feet problems. But I was able to fix them and they grew up to be healthy birds. Is it better to let nature take it's course? So hard for me to do, when I can hear and see the chick. I have never had an egg last this long with an air sac this big. It takes up probably 2/3 of the egg. Does anyone have any experience with this? I also have 19 eggs (peafowl and turkey) in the same incubator that the two eggs were in, and they all seem to be developing on schedule.