May 24, 2024, Buffalo Camp, American Prairie Preserve east of Zortman, Montana. © Lang Elliott. The most exciting section is near the end, from 3:35-4:00.

CAN ANYONE HELP ME IDENTIFY THE MYSTERY SOUND-MAKER? My semi-educated guesses: How about Porcupine?

I recorded this rather amazing mystery sound made by an unknown animal (presumably a mammal) in the American Prairie Preserve in Montana. At dusk, I set my microphone near the edge of Second Creek (47.7599103,-107.777872), just south of the Buffalo Camp campground. This unusual sound event occurred not long after midnight.

Also evident are the loud song-phrases of a Yellow-breasted Chat, a common nighttime singer. Listen also for the hooting (and moans?) of Long-eared Owls in the background.

NEWS FLASH: After some online sleuthing, I am now certain this is indeed a Porcupine. I found a great reference video on Youtube: https://www.youtube.com/watch?v=HpDtSjyTC6I

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