When water is in short supply the more ways you know how to get drinkable water the better off you will be.
This video shows how to cut into a Birch tree and bleed out some of it’s water. Also how to attach a bottle to the tree to leave overnight to catch enough to stay alive.
Survival preparation is a big part of prepping. This is just one more way to improve reediness. Build up your life skills which one day might save you in a real survival situation.
More Bushcraft ideas can be found here.