When trying to protect farms in east Africa from elephants, it would seem that nothing short of a giant reinforced fence or a chasmic ditch could safely keep the largest land animals on Earth away without causing harm. Unfortunately, building such barriers around every field is impractical, and the interactions of people protecting their crops frequently leads to accidents or even death of both farmers and elephants. But zoologist Lucy King had a much smaller idea: bees.
It turns out elephants are terrified of bees because when the insects sting the inside of their trunks the pain is excruciating and there’s little they can do about it. The sound of buzzing alone is enough to make elephants leave an area immediately. King wondered what might happen if a string of suspended beehives at every 10 meters around a field might be enough to keep elephants away. A pilot program in 2009 proved widely successful and soon The Elephant and Bees Project was born.
There are now active beehive fences in Kenya, Botswana, Mozambique, Tanzania, Uganda, and Sri Lanka. Not only do the fences help pollinate crops and safely deter elephants, they also become an additional revenue stream for farmers who harvest honey and sell it locally, a fascinating example of interspecies landscape engineering.