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When this group tracked the pig frog, named after its characteristic vocalization, Aide wasn't expecting to hear many. "I've listened to hundreds of recordings and rarely came across it," he said. But when he let the software analyze 150,000 sound files, it found about 4,000 examples of pig frog calls. The software also picked up a recurring spike in frog calls every September, a trend that fewer, manually counted observations would have missed.