yes drastic swings in humidity can effect the membrane even if no external pips yet. Not as quickly as ones with pips, but it can.
eggs can hatch upright in turners, most dont do it because the mess you have to clean off the turners later. We have set chicken eggs upright in egg cartons to hatch before.
eggs can hatch upright in turners, most dont do it because the mess you have to clean off the turners later. We have set chicken eggs upright in egg cartons to hatch before.