several of my ameraucana and d'uccle eggs in the last hatch made it to full development, but never pipped and died. i'm trying to figure out what went wrong. normally, i dry hatch at about 45 and lockdown at 65. this time i incubated at about 45 - 50 degrees humidity because i noticed the air sacs on the ameraucana eggs were quite large. by lockdown, they were so big i went to 70 degrees humidity. the temp was a steady 99.5. any suggestions/ideas for my next attempt?