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Discussion in 'Incubating & Hatching Eggs' started by Chickens-246, Apr 2, 2007.
What does the higher humidity do before the hatch? Does it start to soften the shell and membrane?
It softens the membrane so it doesnt toughen and "shrink-wrap" the chick inside. When a membrane starts to dry out, and it will when the chick pips a hole in the shell and air gets inside, the chick cannot push through it. It becomes leathery if there isn't enough moisture.
You have to be sure that there isn't too much extra humidity, or the opposite can apply--the chick can drown because not enough moisture has evaporated through the shell and it will drown before it can pip.