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24 encounters
23 October 2013 Keensburg, Wabash County, Illinois Class A #43148

Hiker has close daylight sighting in Beall Woods State Park

The witness was walking a dog on a trail at Beall Woods State Park when the dog stopped and stared into a large ravine. The witness watched an entity at the bottom for about thirty seconds before it moved and turned toward them, then took two steps forward as the witness backed away. After the dog barked forcefully the entity stepped back, and the witness left while hearing it climb out of the ravine and move through the woods.

Full-body sightingFootsteps
2 December 2012 Decatur, Macon County, Illinois Class B #37988

Late night observation by a home owner near Lake Decatur

The witness was smoking on the front porch at night when rustling was heard nearby. A dark massive upright figure stood up about 30 yards away, looked both ways, then ran across the street into a wooded area. Later that night the witness noted a musty odor and heard a deep scream-howl sound on and off.

Full-body sightingRoad crossingEyeshineOdorScream +2
June 2012 Shipman, Macoupin County, Illinois Class B #37758

Ongoing activity described at a home near Shipman

In May/June 2012 around 10:30 p.m. the witness and a relative heard a loud guttural vocalization outside the home. They went to the porch and watched a large dark furry animal low to the ground run on all fours past a neighboring home, triggering motion lights. Coyotes vocalized shortly afterward, and another relative later said the sound had awakened them.

VocalizationFull-body sighting
14 May 2012 Sesser, Franklin County, Illinois Class A #35427

Family has daylight sighting while fishing on Rend Lake

The witness was fishing from a boat with companions near an inlet when they heard a commotion on the bank behind brush. Two of them then saw a tall, muscular, reddish-brown haired biped running quickly away from the shore. They remained on the water while debating whether it could have been a deer or bear. An investigator later spoke with the couple by phone and recorded additional details about size, hair, and distance.

Full-body sightingUnidentified sound
1 October 2011 Edwardsville, Madison County, Illinois Class A #39268

Homeowner has nighttime sighting near Edwardsville

Around 1 a.m. at home, the witness heard a throat-clearing sound and looked out a hallway window toward the yard. Using night vision, the witness watched a large human-like figure standing about 40 yards away between the woods and a shed, staring up into the trees. The figure was gone by the time the witness tried to have another household member see it.

Full-body sightingVocalization
18 July 2011 Marseilles, La Salle County, Illinois Class A #30003

Late night encounter by a motorcyclist outside of Marseilles

The witness was riding a motorcycle home from night work at about 1 a.m. when making a turn beside a cornfield. A large dark figure was seen standing at the field edge a short distance away. It leaned forward and gave an extremely loud high-pitched scream-like call heard again moments later, and the witness accelerated away without looking back.

Full-body sightingScream
18 November 2010 Rushville, Schuyler County, Illinois Class B #33040

Possible sighting by a deer hunter west of Rushville

The witness was deer hunting in a valley at dawn when a loud scream was heard nearby. The yell was loud enough to startle turkeys roosting overhead. Looking toward the sound, the witness saw a tall black animal about 70 yards away that then disappeared.

Full-body sightingScream
17 October 2010 Canton, Fulton County, Illinois Class A #28568

Nighttime sighting near a dumpster by a bicyclist in Canton

A bicyclist riding home late at night heard a noise by a dumpster behind a shed and saw a short stocky dark bipedal figure. The figure turned and walked into thin woods toward a cornfield, and the rider fled home to tell a companion. The companion checked the site minutes later but found only a trapped raccoon in the dumpster.

Full-body sightingUnidentified sound
October 2009 Beecher, Will County, Illinois Class A #42140

Hiker has daylight sighting in Goodenow Grove Nature Preserve

The witness was walking alone on trails at the preserve in the afternoon and heard a twig snap followed by two gorilla-like grunts near a loop trail. The witness then followed a path through tall grass toward the treeline. About 40 feet away, a brown slender entity about six feet tall was seen running silently inside the trees, grabbing a small tree while moving fast and slightly stooped. The witness walked back to the main trail without running and found only their spouse waiting.

Full-body sightingVocalizationUnidentified sound
25 August 2008 Edwardsville, Madison County, Illinois Class A #36571

Dusk sighting in a backyard near Edwardsville

At dusk the witness heard a weed-eater-like whirling sound from the woods behind the backyard and walked back to investigate. He saw a dark figure sitting with its back to him that stood up, gathered something to its chest, and quickly left into the woods. He described the figure as female, about six feet tall, about 30 yards away.

Full-body sightingVocalizationAnimal behaviour
16 November 2007 Detroit, Pike County, Illinois Class A #24354

Hunter has sighting from his deer stand near Detroit

The witness was deer hunting from a tree stand in the early morning when loud footsteps were heard in a nearby pasture. Standing to look, the witness saw a large hairy figure about twenty yards away walking quickly with a long stride. The figure was estimated at 6 to 7 feet tall, dark rusty brown, with broad muscular shoulders, long arms and no apparent neck, and it never looked toward the witness.

FootstepsFull-body sighting
27 October 2007 Carlyle, Clinton County, Illinois Class A #24997

Hiker has nighttime sighting near Carlyle

Late at night the witness walked up a slight incline from a riverbank through timber and heard a loud scream from the east. The witness then watched an animal drop from a tree about six to eight feet up, land on its hind legs, take a few upright steps, then move to all fours and run quickly into the treeline. The witness fled toward the highway. The animal was described as large, muscular and fur-covered, tan or light brown in the moonlight.

Full-body sightingScream
22 July 2006 Jacksonville, Morgan County, Illinois Class A #28484

Vocalizations and a sighting with a spotlight near Murrayville

In 2007 the witness led an armed group with spotlights to an area where relatives had heard screams. He shone a light across a field and saw a large dark hairy figure with outstretched arms run away in a split second. The group pursued into trees hearing walking and branches breaking but found nothing.

Full-body sightingTree breakFootsteps
26 October 2003 Pearl City, Stephenson County, Illinois Class A #15347

Deer hunter has early morning sighting from tree stand near Pearl City

The witness climbed into a tree stand before dawn to bow hunt. While it was still dark, something breathed heavily beneath the stand for about 10 minutes then walked away to the southeast. Shortly after sunrise in light fog, the witness saw a large human-like figure about 100 yards away walking east at a fast pace. After climbing down, the witness followed its footprints eastward.

Full-body sightingUnidentified soundFootstepsTracks
22 October 1994 Rockford, Winnebago County, Illinois Class A #19910

Nighttime sighting by property owner near Kishwaukee River.

Late at night at the witness's home near dense woods, the witness was getting into a car when a noise prompted turning on the headlamps. A tall figure was seen peeking from behind a tree about 30 feet away and held eye contact for several seconds. The figure then turned and ran for several hundred feet, clearing a 5-6 foot fence without breaking stride despite fog.

Full-body sightingPartial sightingUnidentified sound
1994–1995 Bunker Hill, Macoupin County, Illinois Class A #23418

Camper has nighttime sighting outside of Bunker Hill

Late at night on July 4th while camping behind a relative's house, the witness left the campsite with a flashlight to use the bathroom. About a minute down the trail, a large dark-furred biped crossed the trail about 20 feet away, paused to look at the witness after the witness gasped, then walked away. The witness dropped the flashlight, ran back to camp panicked, and later declined to sleep outside.

Full-body sightingGrowlUnidentified soundAnimal behaviour
20 November 1993 Hettick, Macoupin County, Illinois Class A #37697

Memory told of a sighting at dawn while deer hunting north of Hettick

The witness was deer hunting from a tree stand at sunrise when they heard twigs snapping and then a very loud yell/scream. A dark brown figure walking upright, estimated at 6.5 to 7 feet tall, then crossed about 20 yards between two timber areas. The figure did not appear concerned by the witness's presence.

Full-body sightingScream
16 November 1991 Columbia, St. Clair County, Illinois Class A #33638

Woman recalls her night time sighting while fishing behind her home near Columbia

The witness was fishing alone at night in the pond behind her house when she heard a huff-growl behind her and turned to see a figure standing and watching her. When the figure moved, she became frightened, dropped her fishing pole, and ran up the hill to the house. She states she never fished at night or alone again.

GrowlFull-body sighting
October 1989 Sandoval, Marion County, Illinois Class A #10910

Hunter has daylight sighting near Sandoval

The witness was hunting and walking back to a vehicle when they heard noises in brush and across a field. They crouched in brush and saw a large dark brown creature crouching across the field, which then stood erect, grunted, raised its left arm, and walked back into the woods. The witness did not pursue and left directly for the vehicle.

Full-body sightingVocalizationUnidentified soundAnimal behaviour
1980 Carbondale, Jackson County, Illinois Class C #2806

The "Big Muddy Monster" flap of Murphysboro

In the late 1970s to early 1980s, residents around the Big Muddy River reported a foul-smelling, hairy hominid-like creature. Witnesses described seeing and hearing it near the river and finding footprints, with size and color accounts varying. The writer compiled these secondhand accounts and notes the creature was never reported as violent.

Full-body sightingVocalizationOdorTracks