I have 6 peafowl that are 2 years old some male and some female, females have been laying some eggs and i have taken them and put them in the incubator that i have hatched lots of chicks out of, none of them hatched i put a bunch of eggs in there at different times none hatched, the i broke open a egg a there was a dead baby peafowl in there, why aren’t they hatching?