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Podcasts of the Year: Talking to Animals using Artificial Intelligence
Advanced sensors and artificial intelligence could have us at the brink of interspecies communication
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December 27, 2023
Podcasts of the Year: Talking to Animals with Artificial Intelligence
Advanced sensors and artificial intelligence could have us at the brink of interspecies communication
By Kelso Harper & Sophie Bushwick
[A small brown sparrow with a rust-colored face and chest sits on a branch and sings.]
[Illustration of a Bohr atom model spinning around the words Science Quickly with various science and medicine related icons around the text]
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Kelso Harper: Hey, science nerds! This is Kelso Harper, one of the producers of Science, Quickly.
This week we’re looking back at some of our favorite episodes of the year. I chose one that features Sophie Bushwick, our beloved and recently departed technology editor. Don’t worry, she’s fine; she’s just going to be a senior news editor at New Scientist, which is awesome, but we’re really gonna miss her.
I had so much fun recording this episode with Sophie. She told me all about how scientists are actually beginning to decode animal communication using artificial intelligence—like, what? Our conversation genuinely blew my mind, and I hope you enjoy it, too.
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You’re listening to Science, Quickly.
[CLIP: Bird songs]
Kelso Harper: Have you ever wondered what songbirds are actually saying to each other with all of their chirping?
Sophie Bushwick: Or what your cat could possibly be yowling about so early in the morning?
[CLIP: Cat meowing]
Harper: Well, powerful new technologies are helping researchers decode animal communication. And even begin to talk back to nonhumans.
Bushwick: Advanced sensors and artificial intelligence might have us at the brink of interspecies communication.
[CLIP: Show theme music]
Harper: Today, we're talking about how scientists are starting to communicate with creatures like bats and honeybees and how these conversations are forcing us to rethink our relationship with other species. I'm Kelso Harper, multimedia editor at Scientific American.
Bushwick: And I'm Sophie Bushwick, tech editor.
Harper: You're listening to Science, Quickly. Hey, Sophie.
Bushwick: Hi, Kelso.
Harper: So you recently chatted with the author of a new book called, "The Sounds of Life: How Digital Technology is Bringing us Closer to the Worlds of Animals and Plants."
Bushwick: Yeah, I had a great conversation with Karen Bakker, a professor at the University of British Columbia and a fellow at the Harvard Radcliffe Institute for Advanced Study. Her book explores how researchers are leveraging new tech to understand animal communication even in the burgeoning field of digital bioacoustics.
Harper: Digital bioacoustics. Huh. So what does that actually look like? Are we trying to make animals talk like humans using translation collars like in the movie Up?
[CLIP: From Walt Disney’s Up]
Doug the Dog: My name is Doug. My master made me this caller so that I may talk squirrel.
Bushwick: Not quite, but that is similar to how researchers first started trying to communicate with animals in the seventies and eighties, which is to say they attempted to teach the animals human language. But many scientists today have moved away from this human centric approach, and instead they want to understand animal communication on its own terms.
Harper: So instead of trying to teach birds to speak English, we're deciphering what they're already saying to each other in birdish or birdese.
Bushwick: Right, exactly. This new field of digital bioacoustics uses portable field recorders that are like mini microphones you can put pretty much anywhere--in trees, on mountaintops, even on the backs of whales and birds.
They record sound 24/7 and create oodles of data, which is where artificial intelligence comes in. Researchers can apply natural language processing algorithms like the ones used by Google translate to detect patterns in these recordings and begin to decode what animals might be saying to each other.
Harper: Wow, that is wild. So what have scientists learned from this so far?
Bushwick: One of the examples Karen gives in her book is about Egyptian fruit bats. A researcher named Yossi Yovel recorded audio and video of nearly two dozen bats for two and a half months. His team adapted a voice recognition program to analyze 15,000 of the sounds, and then the algorithm correlated specific sounds to certain social interactions in the videos, like fighting over food or jockeying for sleeping positions.
So this research, combined with some other related studies, has revealed that bats are capable of complex communication.
Harper: All I remember being taught was that bats make high-pitched sounds to echolocate as they fly around, but it sounds like there's a lot more to it than that.
Bushwick: Yes, definitely. We've learned that bats have what are known as signature calls which act like individual names.
Harper: Whoa.
Bushwick: And they distinguish between sexes when they communicate with each other.
Harper: What?
Bushwick: They have dialects. They argue over food and sleeping positions. They socially distance when they're ill.
Harper: Are you serious?
Bushwick: Yeah. They're better at it in some ways than we are. So one of the coolest things is that bat mothers use their own version of motherese with their young.
So when humans talk to cute little babies, we use motherese. We raise our pitch, you know, like, oh, what a cute little sweet potato. And bats also use a special tone to talk to their young, but they lower their pitch instead...oh, what a cute little sweet potato.
This makes the bat babies babble back, and it might help them learn specific words or referential sounds the same way that motherese helps human babies acquire language.
Harper: That is bonkers. Or I don't know. Is it? Do I just think it is because I've been cotton the trap of thinking that humans are somehow completely different from other animals and we have a, I don't know, uniquely sophisticated way of communicating. Are we learning that we might not be quite as special as we thought?
Bushwick: Kind of, yeah. This work is raising a lot of important philosophical questions and ethical ones, too. For a long time, philosophers said we would never be able to determine if animals can be said to have language, let alone be able to decipher or speak it. But these new technologies have really changed the game.
One thing that Karen said during our interview is that we can't talk to bats, but our computers can.
You and I can't hear, let alone keep up with the fast, high-pitched communication between bats. And we certainly can't speak it ourselves, but electronic sensors and speakers can.
And with artificial intelligence, we can begin to trace patterns in animal communication that we never could before.
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