okay this is my situation, This is my first time hatching guinea fowl keets. I have 27 keets in a fan-forced incubator the humidity is ranging between 70 and 80% and temp is at 37.5. the keets started hatching on their 24th day of incubation and i now have 18 completely hatched and it is day 27. One of the keets started pipping externally yesterday morning and he still isn't out. he has fully zipped around the shell but just won't come out. every now and again the egg will shake and i can hear him cheeping. I need to know if i should help him out. there are other pipped eggs and some in the middle of hatching and I'm afraid if I open the lid of the incubator, to get the egg out or to get the already hatched chicks the humidity might drop and the ones that are hatching might get stuck inside the membrane. please help!