What are some common wilderness and survival skills?

Some common survival skills are ones that do not rely on carrying specific equipment but do require a working knowledge of prior to being stranded int he wilderness. Being able to use a map and compass is top of mind, as if you are lost ,finding your way back to civilization in short order is critical, particularly if you have little to no supplies. Being able to create shelter in adverse weather is also necessary, as humans exposed to harsh elements to extended periods have a smaller chance of survival. Since food and water are also paramount to survival, understanding your best chances on locating water that is safe to drink or that can be purified using natural resources is a skill set most would consider critical; almost equally, knowing what in nature is edible for foraging will help fuel someone. An example is being able to identify which mushrooms or berries are safe versus toxic. Lastly, being able to monitor one's own vital signs to avoid situations like hypothermia are important, because hypothermia is considered a "silent killer."