AI decodes elephant choruses to reveal herd decision-making - CHOSUNBIZ - Chosunbiz

Amara: Welcome back to The Long Memory — I'm Amara, an elephant biologist and science communicator, and this is the show where we go deep into the inner lives of the most extraordinary animals on Earth. Whether you've been with us from the beginning or you're joining us for the first time, I am so glad you're here. A warm thank you to our sponsors today: Ada, who helps organizations integrate A I into their real-world workflows; Ago Consulting — that's "Ahh-Go" — silicon development consultants working across everything from A I to SoC design; and Zen Semiconductor, an umbrella company with a remarkable portfolio spanning the silicon industry. These are the people keeping the lights on so we can keep telling these stories. And today's stories — oh, they're good ones. We've got A I listening in on elephant conversations to figure out who's really running the show, a GPS study mapping wild elephant journeys across some of the most contested landscape in India, and a new elephant arriving at a zoo and doing something that just stopped me in my tracks when I read about it. Let's get into it. Amara: So let's start with the mind — because if there's one thing I want you to walk away from this podcast believing, it's that the elephant mind is genuinely, measurably, astonishingly complex. And we just got a beautiful new piece of evidence for that. Researchers have been using A I — machine learning tools trained on audio recordings — to decode what's actually happening when an elephant herd gets loud. And what they're finding is that those choruses, those moments when multiple elephants rumble and trumpet and call at once, aren't chaos. They are structured. They are, in a very real sense, conversations — and they reveal something remarkable about how herds make decisions together. Amara: Here's what you have to picture. You're standing at the edge of a waterhole in the late afternoon. A herd of African elephants has gathered — maybe fifteen, twenty individuals, ranging from a grandmother in her fifties down to a calf who's maybe six months old, still figuring out how her own trunk works. And something shifts. There's a low rumble from the matriarch — that infrasonic register that you feel in your chest more than you hear with your ears. And then, one by one, other elephants respond. Some echo her call. Some add their own. And within a few minutes, the herd moves. Together. In one direction. Amara: What the A I is helping scientists do is map the structure of those exchanges — who calls first, who responds, how quickly, and in what acoustic register. Elephants communicate across an enormous frequency range. Some of their calls drop below twenty hertz, completely inaudible to human ears, and can travel several kilometers through the ground, picked up through the sensitive skin of other elephants' feet and trunks. We've known this for decades, thanks to pioneering work by researchers like Katy Payne and Cynthia Moss. But what we couldn't do, until very recently, was process enough of these calls fast enough to see the patterns in real time. Amara: That's where A I changes everything. Because you can feed thousands of hours of recordings into a system, tag them with behavioral observations — what did the herd actually do after this chorus? — and start to find the signal in all that sound. And what's emerging is a picture of collective intelligence. The matriarch initiates. Others respond, and their responses aren't random — they seem to track things like urgency, direction, and consensus. It's not a vote, exactly. It's more like — a conversation where the most experienced voice carries the most weight, and the group listens. Amara: This resonates so deeply with everything we know about matriarchal knowledge. Studies by Karen McComb and her colleagues in Amboseli showed that herds led by older matriarchs were better at identifying threats, finding water during drought, and making decisions that kept calves alive. The matriarch's memory — her decades of accumulated knowledge about landscape, seasonality, danger — is literally stored in her calls. And her herd has learned to trust that. Now, A I is letting us eavesdrop on that trust, and translate it, and that is an extraordinary scientific gift. Amara: Now let's talk about the heart. Because the mind and the heart in elephants are not easily separated — and nowhere is that more clear than in the story of a new arrival. Amara: A young African elephant recently joined the herd at Seneca Park Zoo in Rochester, New York. And look, I know zoo stories can be complicated — there are real, legitimate conversations to be had about captive elephant welfare, and I hold those conversations seriously. But this particular story caught my attention not because of the institution, but because of what the elephants did. Amara: When a new elephant is introduced to an established group, it is never simple. Elephants have long social memories — they remember individuals, they remember relationships, they carry what we might call a social map of who is kin and who is stranger. Introducing an unfamiliar animal into that map is genuinely stressful for everyone involved. Keepers use careful, staged introductions — separating animals with barriers, allowing scent and sound exposure before any direct contact, watching for signals of acceptance or rejection. Amara: And what happens in those first hours and days is fascinating. Elephants investigate each other with extraordinary thoroughness. They use their trunks — which contain more muscle fascicles than any other structure in the animal kingdom, and which are sensitive enough to feel a single blade of grass — to smell, to touch, to learn. They read each other's temporal glands, located on the sides of the head, which secrete a fluid that carries information about age, reproductive state, and emotional arousal. They listen to each other's rumbles. They look at each other's eyes. Amara: And sometimes — not always, but sometimes — what happens is something that looks, undeniably, like welcome. A gentle touch with the trunk tip. A rumble that researchers have associated with affiliative contact. A closing of distance that is chosen, not compelled. Elephants in established groups have been documented greeting each other after separations with what Cynthia Moss described as "greeting ceremonies" — a full-body, multi-sensory reunion that involves rumbling, ear-spreading, spinning, and the touching of mouths and temporal glands. The intensity of the greeting scales with how long they've been apart. Amara: So when I read about this new arrival in Rochester — a young elephant stepping into an unfamiliar space, reading new smells, new sounds, new faces — I think about what that must feel like from the inside. Elephants show physiological stress responses — elevated cortisol, changes in heart rate — during social uncertainty. And they also show something that looks very much like relief when that uncertainty resolves. When the trunk extends and is not pulled away. When the rumble is answered. When the group, slowly, makes room. Amara: That's the heart of the herd. Not a metaphor. An actual, documented, measurable phenomenon — and one of the most moving things I know. Amara: And now, the third thread — elephants and people. And for this one I want to take you to Assam, in northeastern India, because there's a story unfolding there that is urgent and true and doesn't have a clean ending, but matters enormously. Amara: Researchers recently published findings from a GPS tracking study of wild Asian elephants in Assam — and the numbers are striking. These elephants are ranging across more than five hundred square kilometers. Five hundred. That is a vast territory, and it tells you something fundamental about what elephants need: space, continuity, the ability to move between forests and rivers and feeding grounds across seasons, following routes that, in many cases, their matriarchs learned from their mothers, and their mothers before them. Amara: The problem — and it is a serious, heartbreaking problem — is that Assam is also one of the most densely populated regions in India. The human footprint in that landscape is immense: tea gardens, agricultural fields, villages, roads, and railway lines that cut across the ancient corridors elephants have used for generations. When an elephant herd needs to move and the path is blocked — by a fence, by a field, by a train — the consequences can be catastrophic for both sides. Amara: Human-elephant conflict in India costs lives. Elephant lives and human lives. Every year, hundreds of people are killed in encounters with elephants, and dozens of elephants are killed in retaliation or by accident. These are not statistics to gloss over. The farmers whose crops are raided overnight — crops that represent their entire livelihood — they are not villains in this story. And the elephants, following routes their grandmothers walked, routes that used to lead safely from forest to forest — they are not villains either. They are all caught in the same impossible geography. Amara: What the GPS study does — and this is why it matters — is provide the kind of precise, granular data that conservation planners actually need to do something useful. Where exactly are the elephants moving? At what times of year? Which corridors are they using consistently? Where are the pinch points, the places where their range overlaps most dangerously with human settlement? Because if you know that, you can start to design interventions that actually work. Early warning systems that alert villages when a herd is approaching. Underpasses or overpasses on critical railway lines. Compensation schemes that reduce the economic incentive for retaliation. Amara: And here's something I find quietly hopeful in all of this: in parts of India, local communities have become some of the most effective elephant monitors in the world. People who live alongside these herds, who know their movements and their personalities — who have names for the matriarchs, who can tell from a particular rumble that the herd is agitated — these people, when they're brought into the conservation process rather than treated as obstacles to it, become extraordinary allies. That's the Tour for Tusks model too — the conservation outreach effort bringing elephant stories and science to communities in Florida, building the kind of public connection that ultimately translates into political will and funding for elephant protection worldwide. Amara: Because here's the truth: elephants remember landscapes across decades. A matriarch in her forties or fifties carries a mental map of water sources, fruiting trees, and safe passages that accumulated over a lifetime of travel. When she's gone, that knowledge is gone. And when the corridors she navigated are fragmented, her knowledge becomes useless to the calves who might have inherited it. Conservation isn't just about saving animals — it's about preserving something you cannot rewild from scratch: living memory, encoded in behavior, passed from grandmother to grandchild across generations. Amara: That is worth fighting for. That is worth the GPS tags and the data and the difficult conversations and the outreach tours and all of it. Amara: I want to leave you today with something I think about a lot. Memory, in elephants, is not just a cognitive tool — it's the architecture of belonging. It's how a herd knows where to go when the dry season strips the landscape bare. It's how a matriarch recognizes an old ally she hasn't seen in a decade. It's how a grieving elephant returns, again and again, to the bones of someone she loved. Memory is how elephants hold each other, across time and distance and loss. And I think, if we're honest with ourselves, that's not so different from how we hold each other too. Amara: The Long Memory, brought to you by Ada, Ago Consulting, and Zen Semiconductor. If this episode moved you, please subscribe, share it with someone who loves animals or science or just a good story, and leave us a review — it genuinely helps more people find the show. All the sources and studies mentioned today are in the link in show notes. Stay curious, stay kind, and I'll see you next time.