So shoot the excess elephants.
Lots of people are willing to pay to shoot the excess elephants. The Germans and British do not want to allow them to return to Germany and England with their trophies.
It can be a win-win. The leftwing deep-green neo-pagans are unwilling to allow it to happen.
That’s what they have been doing- hunting has brought them enough revenue to support the parks and staff and because of that the species has prospered to the point that their numbers are having a negative impact on local farms, etc. These European countries are running campaigns against hunting.
The problem could be reduced by more hunting.