Class B First-hand BFRO #24426

Local people record strange primate vocalizations in remote woods north of Nimrod (w/ recordings)

August 2008 off and on from 11:00-1:00 Nimrod, Cass County, Minnesota 4 witnesses

Account

The witness and three companions went to a regular search area at night to listen for responses. They heard prolonged vocalizations from unseen sources, at one point estimated within 75 yards and loud enough to feel chest vibration. A companion recorded the sounds on a digital camera and the group felt the sounds did not match known hunted animals.

Summary drafted by AI from the source report and checked by code before I publish it. The witness's own words remain with the publisher — read the original report .

What was reported

Every kind of observation in the account. Select one to find other encounters with it.

Sounds

Facts & provenance

Each value names where it came from.

Date
August 2008
Stated BFRO report #24426 · BFRO report, labelled fields: Year, Month
Time of day
off and on from 11:00-1:00
Stated BFRO report #24426 · BFRO report, “Time And Conditions” section
Place
Nimrod, Cass County, Minnesota
Stated BFRO report #24426 · BFRO report, labelled fields: State, County, Nearest Town, Nearest Road
Map point
46.67, -94.80 (± 1000 m)
Stated BFRO map layer · BFRO published map layer · read with 85% confidence
BFRO map layer point for report 24426 with published boundary
Account type
First-hand
Stated BFRO report #24426 · BFRO report, “Observed” section
Witnesses
4
Derived BFRO report #24426 · BFRO report, “Other Witnesses” section
Witness was
searching for creatures and listening for responses
Stated BFRO report #24426 · BFRO report, “Observed” section
Witness's word for it
these creatures
Stated BFRO report #24426 · BFRO report, “Observed” section
Source classification
Class B
Stated BFRO report #24426 · BFRO classification label

Evidence & investigation

What the source says was found or done. Claimed evidence is listed as claimed; the Anomadex has not examined it.

Investigated by
Andy P. (BFRO)
Audio

seven sound files of vocalizations recorded on a digital camera, later cropped and amplified

BFRO report, “Follow-Up” section
Audio

The witnesses submitted sound files that were cropped to the best parts and amplified for listening.

BFRO report, “Follow-Up” section
Follow-up

An investigator interviewed the witness by phone and recorded details about the area and the extended auditory observation.

BFRO report, “Follow-Up” section
Follow-up

The witnesses submitted sound files that were cropped to the best parts and amplified for listening.

BFRO report, “Follow-Up” section
Follow-up

Public feedback suggested some calls could be atypical cattle calls and follow-up discussion noted cattle in the area but not at the recording spot at the time.

BFRO report, “Follow-Up” section

Source timeline

Every record this entry is built from, earliest known first. Records are versioned and never edited in place.

  1. Published 2008-08-14 Retrieved 2026-09-25 Version 1 5 images at source Hash c3cf84d1e440
    BFRO - Bigfoot Field Researchers Organization
  2. BFRO map layer Reference
    Retrieved 2026-09-24 Version 1 Hash cfb8a3d423b7
    BFRO - Bigfoot Field Researchers Organization

The report refers to

  • “Review Messenger menahga newspaper”
    Not in the Anomadex yet