I was wondering long does a fertile egg last before setting in incubator. I need to send some eggs to my dads cousin in PA and right now only 1 pair is laying everyone else kind of stopped. I was told only 5 days and then I heard more. I will be flying them on the plane with me next week in a special made box. and I wasnt to know how many days before I can start to collect? anyone help please? Thank you!!