I have read people have had no issues with the air sack being not proper.Thanks so much. I will practice on the ladies. If the airspace is not in the right place, then what?
It were me I would hope for the best and throw them under your ladies.
From what I have been reading it’s more the age and how fertile the breeding stock is that matters.
Maybe that’s why my school Silkie eggs didn’t do so well. Those ladies are 3 this year.
Maybe I should have tried to set some of Marty’s and Henny’s eggs here

Maybe I should keep my two remaining silkie chicks here

Gonna need a bigger barn here Bob…..