I am at day 25, I have small chicken eggs, not sure what you call them in English. White and black spoted small chickens. So I had both in there and the first small egg hatched at day 19. Day 20, 4 normal chicken eggs hatched and at day 21 the last 4 hatched. After candling I still have 2 small eggs in the incubator. Inexperienced me; On day 23 I thought they would not come out again and broke open 1 that had not fully developed but was still alive. I killed it by opening it as they have not yet absorbed the yolk completely. So I left the last 2 in there and now on day 25 and this morning both have pipped and peeping only the shell and not the membrane was pipped. This afternoon no progress so I helped slightly as the I knew from opening the others that the shell and membrane was very hard en tough with these eggs. When it was half way open, he was still weak and the peeping lesened. He did not make any energy to come out by himself. So I put him back into the incubator and tomorrow is day 26 and I am not sure what I will find. The other one that pipped I left just like that...not sure if he will survive...or even the other one?