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Researchers aim to identify pika calls through 'acoustic fingerprinting' | Institute of Arctic and Alpine Research | University of Colorado Boulder

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Chris Ray has studied pika populations in the West for nearly four decades. Today, she is collaborating with PhD student Rachel Mae Billings on a project that

An American pika in Alberta, Canada. Photo courtesy of Alan D. Wilson, Creative Commons Attribution-Share Alike 3.0 Unported. Published:10/28/2025 10/28/2025 On a foggy, cool morning earlier this fall, wildlife biologist Chris Ray and PhD student Rachel Mae Billings sat down at the edge of a rock-strewn mountain slope and listened — just listened. All was quiet aside from the scratching of pencils in field notebooks, the occasional chickadee twitter and, most importantly, squeaking pikas. Chris Ray writes in a field notebook beside rocky pika habitat near Mitchell Lake in the Indian Peaks…

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