The Animal Translator
Scientists are using machine learning to eavesdrop on naked mole rats, fruit bats, crows, and whales and to communicate back. The naked mole rat may not be much to look at, but it has much to say. The wrinkled, whiskered rodents, which live, like many ants do, in large, underground colonies, have an elaborate vocal repertoire. They whistle, trill, and twitter; grunt, hiccup, and hiss. And when two of the voluble rats meet in the dark tunnel, they exchange a standard salutation. "They'll make a soft chirp, and then a repeating soft chirp", said Alison Barker, a neuroscientist at Max Planck Institute of Brain Research, in Germany. "They have a little conversation". Hidden in this everyday exchange is a wealth of social information, Dr. Barker and her colleagues discovered when they used machine-learning algorithms to analyze 36,000 soft chirps recorded in seven mole rat colonies. Not only did each mole rat have its own vocal signature, but each colony had its o...

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