One of my secret talents is I can tell whenever someone has recently eaten pizza in whatever space I’m in. I can sniff out pizza anywhere.
A friend recently told me that with that talent, I would fit right in with African elephants. Scientists recently found that, along with using their trunks to breathe, communicate, and lift objects, they also use them to sniff out their preferred foods over long distances.
Elephants’ Favorite Foods
Scientists in South Africa collected eleven plants they knew wild African elephants ate in the wild. They knew elephants really liked six of those plants, and weren’t as crazy about the remaining five.
For the first experiment, researchers hid plant samples in two black plastic bins, and observed which plants the elephants picked. When one bin had a preferred food and the other had a non-preferred food, the elephants tended to pick the bin with the preferred food. They had a harder time choosing when the choice was between two preferred foods and two non-preferred foods.
In another experiment, researchers placed the elephants in a Y-shaped maze that had a different plant sample at the end of each 23-foot arm. The elephants always made their way toward their preferred plants. Even when the two samples were close on the scale of preference, they chose the one they liked better.
Thank you to Lucy King of Save The Elephants for reviewing this episode’s script.
Sources And Further Reading:
- Davis, Victoria. “Elephant trunks are long-distance food detectors.” Science. August 6, 2018. Accessed November 5, 2018.
- Schmitt, Melissa H. Shuttleworth, Adam. Ward, David. Shrader, Adrian M. African elephants use plant odours to make foraging decisions across multiple spatial scales. Animal Behaviour Volume 141, July 2018, Pages 17-27.