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Virtual woodland scene showing a fallow deer used in the visual detection experiment.
Image Credit:
Peter J. Allen, Allen et al., Scientific Reports (2026)
Virtual Forest Experiments Reveal How Prehistoric Hunters May Have Spotted Deer
A new study using virtual woodland environments has explored how coat colour, distance and body orientation influence the ability of humans to detect fallow deer, offering a new experimental approach to understanding hunting behaviour during the Palaeolithic.
Fallow deer were hunted by humans in Europe from at least the Middle Palaeolithic. Archaeological studies of prehistoric hunting have traditionally relied on stone and wooden weapons or animal bones bearing possible hunting injuries. The new research instead focuses on an earlier stage of the hunt: visually locating prey.
Researchers created simulated deciduous woodland resembling environments present in north-western Europe during Pleistocene interglacial periods. Participants viewed thousands of computer-generated forest scenes and indicated whether a female fallow deer was present.
The first experiment tested three coat colours—spotted, dark and very pale—and distances ranging from 30 to 90 metres.
As expected, deer became increasingly difficult to detect at greater distances. Overall detection accuracy declined from about 95% at 30 metres to 70% at 90 metres.
However, coat colour produced important differences. Pale deer were by far the easiest to see and remained highly visible even at the greatest distance. Their light colour stood out strongly against the woodland background.
Unexpectedly, dark deer were the hardest to detect, rather than the naturally common spotted form. Participants correctly identified dark deer about 74% of the time overall, compared with approximately 86% for spotted deer and 93% for pale animals.
The results suggest that the familiar spotted coat of fallow deer may provide some protection from detection, but camouflage alone may not explain why this colour became dominant in natural populations.
A second experiment examined another factor: the direction in which the deer was facing.
Animals viewed from the side were easiest to detect, with an average accuracy of about 95%. Deer positioned at a 45-degree angle were almost as easy to find, at 93%. By contrast, animals facing directly toward the observer were detected only about 65% of the time.
Distance particularly affected spotted deer viewed head-on. At longer ranges, detection rates declined dramatically.
Researchers suggest that this happens partly because an animal seen from the front presents a smaller visual target. More importantly, its familiar four-legged body shape becomes less obvious. From the side, the body, legs, neck and head form a recognizable outline that the human visual system can identify quickly.
This result may help explain patterns seen on animal bones from archaeological sites. Prehistoric projectile injuries frequently occur on areas of the skeleton associated with the side of the body, especially around the chest.
A lateral position would have provided hunters with both a clearer view of the animal and better access to vital organs. Archaeological examples include possible projectile injuries on fallow deer from Pleistocene Germany and other hunted animals from European sites.
The researchers stress that the experiments do not recreate prehistoric hunting as a whole. Hunting also involved tracking, approaching prey, selecting a target and launching a weapon. The virtual experiments isolate only the visual detection stage.
Nevertheless, the study demonstrates how digital environments can complement traditional archaeological evidence. By experimentally testing how humans perceive prey under controlled conditions, virtual simulations may help researchers better understand some of the visual challenges faced by prehistoric hunters.
Published on: 07-08-2026
Edited by: Abdulmnam Samakie
Source: Scientific Reports
