Forest elephant communication research at Dzanga-Sangha in Central Africa uses cutting-edge sound recordings to decode how elephants communicate with one another and to help protect one of the world’s most endangered species.
The forest elephant communication research has revealed that these animals are far more expressive than most people realize. African forest elephants do not rely on the loud trumpeting sounds many associate with the species. Instead, they spend most of their time producing deep, low-frequency rumbles that fall at or below the threshold of human hearing. People standing nearby may feel a faint vibration but hear nothing.
This discovery dates back to 1984, when bioacoustic researcher Katy Payne stood outside an elephant enclosure at a zoo and felt unexplained vibrations in the air. That moment launched decades of study into how elephants actually communicate. Bioacoustics is the scientific study of sound produced by or affecting living organisms. Payne went on to found the Elephant Listening Project, now one of the most ambitious wildlife sound archives on the planet.
Researchers from the Elephant Listening Project, a program of the K. Lisa Yang Center for Bioacoustics in Conservation at Cornell University, have installed acoustic recording devices across the Dzanga-Sangha Protected Area (DSPA) complex in the Central African Republic. This protected zone covers nearly 1,200 square kilometers of dense rainforest. The devices run continuously, and the archive now holds close to one million hours of recorded sound, forming the backbone of ongoing forest elephant communication research.
The forest itself makes this work both urgent and difficult. African forest elephants live in thick vegetation where visual observation is nearly impossible. This same cover has made them easy targets for poachers for decades. Their ivory is denser and harder than that of savanna elephants, making it more valuable in illegal markets. The dense forest hides both the elephants and those who hunt them.
That is where the recordings serve a purpose beyond science. The devices pick up not only elephant calls but also gunshots and other sounds linked to human activity. Researchers report this data regularly to the DSPA administration. Rangers use the information to predict where illegal hunting is most likely to occur and plan anti-poaching patrols more effectively. Forest elephant communication research, in this way, directly saves lives, both animal and human.
On the scientific side, researchers are building something remarkable: a structured dictionary of elephant calls. At Dzanga Bai, a large natural clearing in the forest, scientists observe elephant behavior directly and match it to specific sounds. Each call gets categorized and stored in a growing database. The goal is to understand what different sounds mean across different situations, relationships, and social settings.
Forest elephant communication research at Dzanga Bai is producing the world’s first structured dictionary of elephant calls, with scientists matching observed behaviors to specific sounds and building a growing database that could unlock the meaning behind one of nature’s most complex and least understood languages. Photo by Wolfgang Hasselmann on Unsplash.
To make low-frequency calls visible, researchers convert them into spectrograms. A spectrogram is a visual map of sound frequencies over time, displayed as an image rather than an audio file. When researchers analyze these images, the full complexity of forest elephant communication becomes apparent. Different calls carry different meanings depending on context, the relationships between individuals, and the presence of nearby potential threats.
Forest elephants are highly social animals with strong family bonds and significant intelligence. They use their calls to stay connected across long distances in dense vegetation, to coordinate group movement, and to manage relationships within their families. When a threat, such as a poacher, enters their territory, their vocal behavior shifts noticeably. That change can now be detected, recorded, and acted upon in near real time.
Understanding elephant language also helps researchers measure how human activity disrupts elephant well-being. Deforestation and oil drilling alter behavior in ways that forest elephant communication research can now document with sound data. This kind of evidence is increasingly valuable for building legal arguments and conservation protections that hold up under scrutiny.
Beyond their own survival, forest elephants are essential to the rainforest ecosystem. They travel long distances and spread plant seeds along their routes. Their feeding habits also improve the forest’s ability to store carbon, making them quiet but powerful allies in the fight against climate change. Protecting them means protecting one of the most important ecosystems on Earth.
The coming decade will be critical. Data gathered through forest elephant communication research could shape conservation policy for generations. The Elephant Listening Project is active across multiple national parks in the region, steadily expanding both the archive and the understanding it produces. Science rarely offers easy answers, but this work points clearly in one direction: the more the world learns to understand what forest elephants are saying, the better equipped it will be to keep them alive.
