Ollie Metcalf first stumbled upon the potential power of sound when surveying birds on windfarms in the UK. So often, his trips would end in frustration. “I’d spend hours surveying without ever seeing much, then miss a load when I wasn’t there,” he recalls.Metcalf knew there had to be a better way. Then, it struck him. Birds communicate with sound, so why not listen rather than watch? “As humans, we are primarily focused on vision, and we think that is how we should perceive the world,” he says. “But birds want to be detected by sound.”
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