Like mentioned , you have to seal the ends , sometimes the whole piece - ( like ebony ) I will coat a whole piece in melted wax sometimes , depends ...some woods are astronomical in price and extra precautions are justified - Glue , Wax , CA glue are some that I will use -
I live in a hot humid area ,the rapid increase and drop in temperature from day to night all summer long is asking for trouble , so I will take some (most) pieces of wood and place them inside my house (a/c) and store them there
A book could be made on drying out wood for use in calls , stacking , placement etc... I have a preference for air dried wood , and avoid kiln dried wood at all costs - some guys make different types of calls with different woods so their needs may be different