A site dedicated to the review and analysis of potential sasquatch vocalizations, Sasquatch Bioacoustic combines techniques from the domains of intelligence collection, audio analysis and bioacoustic studies to examine the evidence of sasquatch through their vocalizations. ~Monongahela

Saturday, March 2, 2013

Great Vocals From Michigan

For just over a year now I've had the great pleasure of working with Jim Sherman, a BFRO investigator from the state of Michigan. In 2011 Jim came into contact with a witness from Isabella County that had recordings of strange vocalizations emanating from the night time forests around her farm. Jim liked what he heard and during his follow up investigation he asked for my opinion on the clips.

I was quite blown away by the amount, quality, and variety of vocalizations that Jim had to share, both from the witness, and from his own on-site investigation. I happily worked with Jim throughout much of 2012 to study his recordings and compare them to other audio of suspected sasquatch vocalizations. His captures were very consistent with what we've come to expect from possible sasquatch vocals, and included moan howls, whoops, knocks, and other complex vocals.

As a result of his hard work and our collaboration, Jim assembled a great report for the BFRO database. And prior to publishing the report the witness's recordings and farm became a significant part of a 2012 episode of "Finding Bigfoot". After Jim published the report, we collaborated to add many of the best vocal captures to the online write-up. The end result, in our opinion, is a great audio reference that other investigators could share with witnesses while they work with them to identify the vocals they've heard.

Here's a link to Jim's report and the great collection of suspected sasquatch vocals it contains: Report # 32981 (Class B): Farmers record interesting vocalizations west of Clare

In the months since this report went public, Jim has done a great job breaking down and sharing these clips, and others, in a series of instructive videos. On occasion I've contributed a video spectrogram clip to his effort and the end result is more entertaining than the basic video spectrograms I've posted here in the past. So for the sake of sharing to all those who might find these pages interesting, here are the first three installments of Jim's video reports:

-Michigan Sasquatch Vocals? Vol. 1 The Isabella Howl and Singing Howls
-Michigan Sasquatch Vocals?-Vol. 2 Four Moan Howl
-Michigan Sasquatch Vocals? Vol. 3. What Do Vocals Look Like?



  1. that howl gave me goosebumps..... still shivering.....

  2. I think that a police sketch artist should interview and draw the face of bigfoot. After interviewing people who saw the face clear. I would love to see such drawings.

  3. Linwood, you should check out Sybilla Erwin's page. She's the artist that draws for BFRO reports when witnesses get a good clear facial. Here's her link:

  4. Wow, those vocalizations are unbelievable, the farmer and his family are very brave to stay there with so much activity going on. Thank you for sharing!

    1. I get the impression the farmers don't feel very threatened by these vocalizers at all. They've been there for years and nothing bad has ever taken place. They just seem to be a part of the landscape, something you hear, but almost never see.