Tool use during display behavior in wild cross river gorillas

  title={Tool use during display behavior in wild cross river gorillas},
  author={Livia Wittiger and Jacqueline L. Sunderland-Groves},
  journal={American Journal of Primatology},
During the course of a 3‐year ecological study on Cross River gorillas (Gorilla gorilla diehli) at the Kagwene Mountain in Cameroon, we observed three cases of tool use which may be unique to the gorillas of this region and possibly learned through interactions with humans. A non‐habituated group of Cross River gorillas threw fistfuls of grass toward humans in display contexts. An individual gorilla was also observed to throw a detached branch toward researchers during another encounter. The… 

Possible tool use in a mountain gorilla

Functionality in Tool Use in Western Lowland Gorillas (Gorilla gorilla gorilla)

Nonhuman primates are known to use objects as tools. Amongst the great apes, gorillas seem to be the least proficient tool users. Previous research has shown that the western lowland gorillas

Gorilla Mothers Also Matter! New Insights on Social Transmission in Gorillas (Gorilla gorilla gorilla) in Captivity

The results showed that only the food processing technique spread from three to twenty-one individuals during the ten-year period, whereas the communicative display died out completely, suggesting that behaviors, which provide a direct benefit to individuals, have a high chance of social transmission while the loss of benefits can result in the extinction of behaviors.

Nesting Behavior of Gorilla gorilla diehli at Kagwene Mountain, Cameroon: Implications for Assessing Group Size and Density

We recorded nesting data at 569 fresh night nest sites, comprising 7032 individual nests, of Cross River gorillas inhabiting the Kagwene Mountain in western Cameroon. The mean night nest group size

Use of buckets as tools by Western lowland gorillas.

Data provide evidence of the ability of gorillas to utilize tools, given the appropriate environmental conditions, and continue to explore the abilities of gorilla to recognize the functionality of buckets as tools.


The comparative approach, by itself, cannot provide hard evidence of behavioral traditions: Developmental studies, as well as field experiments, are helping to unravel the cultural nature of primate tool use.

17. Tool Use and Manufacture in the Last Common Ancestor of Pan and Homo

Because chimpanzees and bonobos are both the authors' sister species and, notwithstanding their degrees of reliance on technology, both are known to use tools, a comparative study of tool use and manufacture is needed.

Born to Throw: The Ecological Causes that Shaped the Evolution of Throwing In Humans

It is argued that throwing first arose during agonistic interactions and was later incorporated into hunting by human ancestors as well as other primates.



Behavioral Responses of Gorillas to Habituation in the Dzanga-Ndoki National Park, Central African Republic

We monitored the impact of habituation for tourism through changes in gorillas' behavior during the habituation process at Bai Hokou (Dzanga-Ndoki National Park, Central African Republic) from August

Animal behaviour: An unusual social display by gorillas

This unusual behaviour may have developed only in gorillas that visit open swampland, where visibility greatly exceeds that encountered in the forest and highly visual, long-distance displays are therefore of value.

Spontaneous use of sticks as tools by captive gorillas (Gorilla gorilla gorilla)

The present report describes the spontaneous use of sticks, as tools by young adult gorillas (Gorilla gorilla gorilla) in a social group at the San Diego Wild Animal Park, CA, USA. Three 8-year-old

Tool use and tool making in wild chimpanzees.

  • C. BoeschH. Boesch
  • Biology, Psychology
    Folia primatologica; international journal of primatology
  • 1990
Factors involved in the acquisition and the benefit of tool use are discussed along with factors affecting the frequency and complexity of tool making in chimpanzees.

Use and Manufacture of Tools to Extract Food by Captive Gorilla gorilla gorilla: Experimental Approach

The aim of this study is to test the ability of captive gorillas to use and manufacture tools for static food extraction.

Responses of wild chimpanzees and gorillas to the arrival of primatologists: behaviour observed during habituation

Habituation is the term used to describe the acceptance by wild animals of a human observer as a neutral element in their environment that allows the natural behaviour of a species to be observed and documented.

Animal Tool Behavior: The Use and Manufacture of Tools by Animals

Through a comprehensive synthesis of the studies produced through 2010, the authors provide an updated and exact definition of tool use, identify new modes of use that have emerged in the literature, examine all forms of tool manufacture, and address common myths about non-human tool use.