Sooty mangabeys scavenge on nuts cracked by chimpanzees and red river hogs—An investigation of inter‐specific interactions around tropical nut trees
Sign Up to like & getrecommendations! Published in 2018 at "American Journal of Primatology"
DOI: 10.1002/ajp.22895
Abstract: Carrion scavenging is a well‐studied phenomenon, but virtually nothing is known about scavenging on plant material, especially on remnants of cracked nuts. Just like meat, the insides of hard‐shelled nuts are high in energetic value,… read more here.
Keywords: river hogs; cracked chimpanzees; nut cracking; sooty mangabeys ... See more keywords
Naïve orangutans (Pongo abelii and Pongo pygmaeus) individually acquire nut‐cracking using hammer tools
Sign Up to like & getrecommendations! Published in 2021 at "American Journal of Primatology"
DOI: 10.1002/ajp.23304
Abstract: Nut‐cracking with hammer tools (henceforth: nut‐cracking) has been argued to be one of the most complex tool‐use behaviors observed in nonhuman animals. So far, only chimpanzees, capuchins, and macaques have been observed using tools to… read more here.
Keywords: orangutans pongo; abelii; pygmaeus; nut ... See more keywords
Technical intelligence and culture: Nut cracking in humans and chimpanzees.
Sign Up to like & getrecommendations! Published in 2017 at "American journal of physical anthropology"
DOI: 10.1002/ajpa.23211
Abstract: OBJECTIVES According to the technical intelligence hypothesis, humans are superior to all other animal species in understanding and using tools. However, the vast majority of comparative studies between humans and chimpanzees, both proficient tool users,… read more here.
Keywords: cracking humans; nut cracking; humans chimpanzees; technical intelligence ... See more keywords
Field experiments find no evidence that chimpanzee nut cracking can be independently innovated.
Sign Up to like & getrecommendations! Published in 2022 at "Nature human behaviour"
DOI: 10.1038/s41562-021-01272-9
Abstract: Cumulative culture has been claimed a hallmark of human evolution. Yet, the uniqueness of human culture is heavily debated. The zone of latent solutions hypothesis states that only humans have cultural forms that require form-copying… read more here.
Keywords: chimpanzee nut; culture; field experiments; independently innovated ... See more keywords
Analysis of wild macaque stone tools used to crack oil palm nuts
Sign Up to like & getrecommendations! Published in 2018 at "Royal Society Open Science"
DOI: 10.1098/rsos.171904
Abstract: The discovery of oil palm (Elaeis guineensis) nut-cracking by wild long-tailed macaques (Macaca fascicularis) is significant for the study of non-human primate and hominin percussive behaviour. Up until now, only West African chimpanzees (Pan troglodytes… read more here.
Keywords: palm nuts; palm; crack oil; nut cracking ... See more keywords
Testing the individual and social learning abilities of task-naïve captive chimpanzees (Pan troglodytes sp.) in a nut-cracking task
Sign Up to like & getrecommendations! Published in 2020 at "PeerJ"
DOI: 10.7717/peerj.8734
Abstract: Nut-cracking is often cited as one of the most complex behaviours observed in wild chimpanzees. However, the cognitive mechanisms behind its acquisition are still debated. The current null hypothesis is that the form of nut-cracking… read more here.
Keywords: task; variants social; nut cracking; acquisition ... See more keywords