So much protected land or no hunting zones here that pigs will figure this out and they will thrive. Raid crops all night long and go back to area where they won't be disturbed during the day.
There's a wetland County forest here (600 acres and no hunting) that is completely surrounded by farm fields. What else would a pig want?
I was hunting wild boars in Europe for more than 10 years. The situation right now is completely out of control. In early years, "experts" tried controlling the numbers with contraception, poisoning, trapping & selective culling. That didn't work. When they basically capitulated with options, they allowed general public to hunt these monsters (that's what they are). Btw, Germany considers wild pigs problem more complex and larger than rat infestation.
infestation is the word. we educated wild boars in europe to find food in many places and the reproduction rate came from 1 litter a year to now 2 or even 3. why? less predation and more food sources. you should see a field of corn, wheat or potatoes after a night of wild banquet ...
we even had in france administrative driven as the damages on crops are paid by the hunters and i can tell you it is not working so well. in our small hunting group we had so many tags for wild boars that they stopped to issue them and we had only to report the killings of any only over one year. piglets are great to eat . they tried to extend the hunting season as well but you cant keep it up.
so once it s started it will be hard to control even in colder climate. wild boars are doing well in siberia despite wolves and grizzly bears.