Coronation- last one left-one died in shell-no pip -the rest Did not form or died early into incubation- he was put in the 14th of Dec and still has not hatched- no pip-but alive- Do I need to intervene or leave him be??
Tough question, wish this was an easier one. If you had temperature issues, the baby might be slow developing. But sometimes I pip a small hole into the air sac just to see if the little one is alive and offer encouragement. I've had quite a few hatch that way, while some others still died. Good luck.