Now showing items 1-20 of 23

    • Behavioural patterns of vocal greeting production in four primate species 

      Fedurek, Pawel; Neumann, Christof; Bouquet, Yaelle; Mercier, Stephanie; Magris, Martina; Quintero, Fredy; Zuberbuhler, Klaus (2019-04-24) - Journal article
      Social animals have evolved a range of signals to avoid aggressive and facilitate affiliative interactions. Vocal behaviour is especially important in this respect with many species, including various primates, producing ...
    • Bonobos (Pan paniscus) vocally protest against violations of social expectations 

      Clay, Susanna Elizabeth Valerie; Ravaux, Lucie; de Waal, Frans B. M.; Zuberbuhler, Klaus (2016-02) - Journal article
      Research has shown that great apes possess certain expectations about social regularities and both perceive and act according to social rules within their group. During natural and experimentally induced contexts, such as ...
    • Chimpanzee quiet hoo variants differ according to context 

      Crockford, Catherine; Gruber, Thibaud; Zuberbuhler, Klaus (2018-05-23) - Journal article
      In comparative studies of evolution of communication, the function and use of animal quiet calls have typically been understudied, despite that these signals are presumably under selection like other vocalisations, such ...
    • Combinatorial capacities in primates 

      Zuberbuhler, Klaus (2018-06-06) - Journal item
      Do primates have syntax-like abilities? One line of enquiry is to test how subjects respond to different types of artificial grammars. Results have revealed neural structures responsible for processing combinatorial content, ...
    • Contextual encoding in titi monkey alarm call sequences 

      Berthet, Mélissa; Neumann, Christof; Mesbahi, Geoffrey; Cäsar Damas, Cristiane; Zuberbuhler, Klaus (2018-01) - Journal article
      Many primates produce one type of alarm call to a broad range of events, usually terrestrial predators and non-predatory situations, which raises questions about whether primate alarm calls should be considered “functionally ...
    • Correlates of social role and conflict severity in wild vervet monkey agonistic screams 

      Mercier, Stéphanie; Déaux, Eloïse C.; van de Waal, Erica; Bono, Axelle E. J.; Zuberbuhler, Klaus (2019-05-01) - Journal article
      Screams are acoustically distinct, high-pitched and high-amplitude calls, produced by many social species. Despite a wide range of production contexts, screams are characterised by an acoustic structure that appears to ...
    • The development of communication in alarm contexts in wild chimpanzees 

      Dezecache, Guillaume; Crockford, Catherine; Zuberbuhler, Klaus (2019-08) - Journal article
      Animals have evolved a range of communicative behaviours in the presence of danger. Although the mechanisms and functions of some of these behaviours have been relatively well researched, comparatively little is known about ...
    • Development of object manipulation in wild chimpanzees 

      Lamon, Noemie; Neumann, Christof; Zuberbuhler, Klaus (2018-01) - Journal article
      Chimpanzees’ natural propensity to explore and play with objects is likely to be an important precursor of tool use. Manipulating objects provides individuals with pivotal perceptual-motor experience when interacting with ...
    • Elevated sensitivity to tactile stimuli in stereotypic horses 

      Briefer Freymond, Sabrina; Bardou, Déboraht; Beuret, Sandrine; Zuberbuhler, Klaus; Bachmann, Iris; Briefer, Elodie F. (2019-05-31) - Journal article
      Although stereotypic behaviours are a common problem in captive animals, why certain individuals are more prone to develop them remains elusive. In horses, individuals show considerable differences in how they perceive and ...
    • Female chimpanzees adjust copulation calls according to reproductive status and level of female competition 

      Fallon, Brittany Laurie Ann; Neumann, C; Byrne, Richard William; Zuberbuhler, Klaus (2016-03) - Journal article
      Female chimpanzees (Pan troglodytes) are usually depicted as sexually submissive and bound by male coercion, because males are able to monopolize oestrous females, limiting a female's options for mate choice. We present ...
    • Flexible use of simple and combined calls in female Campbell's monkeys 

      Coye, Camille; Ouattara, Karim; Arlet, Malgorzata E.; Lemmasson, Alban; Zuberbuhler, Klaus (2018-07) - Journal article
      Call combinations allow animals to expand the communicative power of small repertoires with acoustically inflexible elements. In Campbell's monkeys, Cercopithecus campbelli, males possess a small repertoire of calls that ...
    • Intra-community infanticide in wild, eastern chimpanzees : a 24 year review 

      Lowe, Adriana E.; Hobaiter, Catherine; Asiimwe, Caroline; Zuberbuhler, Klaus; Newton-Fisher, Nicholas E. (2019-05-27) - Journal article
      Infanticide is well documented in chimpanzees and various hypotheses have been proposed to explain this behaviour. However, since infanticide by chimpanzees is relatively rare, it has thus far not been possible to thoroughly ...
    • Meaningful call combinations in a non-human primate 

      Arnold, Kate; Zuberbuhler, Klaus (2008-03-11) - Journal article
      Human speech is based on rule-governed assemblage of morphemes into more complex vocal expressions. Free-ranging putty-nosed monkeys (Cercopithecus nictitans) provide an interesting analogy, because males combine two loud ...
    • Skin temperature and reproductive condition in wild female chimpanzees 

      Dezecache, Guillaume; Wilke, Claudia; Richi, Nathalie; Neumann, Christof; Zuberbuhler, Klaus (2017-12-05) - Journal article
      Infrared thermal imaging has emerged as a valuable tool in veterinary medicine, in particular for evaluating reproductive processes. Here, we explored differences in skin temperature of twenty female chimpanzees in Budongo ...
    • Skin temperature changes in wild chimpanzees upon hearing vocalizations of conspecifics 

      Dezecache, Guillaume; Zuberbuhler, Klaus; Davila-Ross, Marina; Dahl, Christoph D. (2017-01) - Journal article
      A growing trend of research using infra-red thermography (IRT) has shown that changes in skin temperature, associated with activity of the autonomic nervous system, can be reliably detected in human and non-human animals. ...
    • Social familiarity affects Diana monkey (Cercopithecus diana diana) alarm call responses in habitat-specific ways 

      Stephan, Claudia; Zuberbuhler, Klaus (2016-02-24) - Journal article
      Male Diana monkeys produce loud and acoustically distinct alarm calls to leopards and eagles that propagate over long distances, much beyond the immediate group. Calling is often contagious, with neighbouring males responding ...
    • Social information in equine movement gestalts 

      Dahl, Christoph D.; Wyss, Christa; Zuberbuhler, Klaus; Bachmann, Iris (2018-05-23) - Journal article
      One model of signal evolution is based on the notion that behaviours become increasingly detached from their original biological functions to obtain a communicative value. Selection may not always favour the evolution of ...
    • Titi monkeys combine alarm calls to create probabilistic meaning 

      Berthet, Mélissa; Mesbahi, Geoffrey; Pajot, Aude; Cäsar, Cristiane; Neumann, Christof; Zuberbuhler, Klaus (2019-05-15) - Journal article
      Previous work suggested that titi monkeys Callicebus nigrifrons combine two alarm calls, the A- and B-calls, to communicate about predator type and location. To explore how listeners process these sequences, we recorded ...
    • Trade-offs in the production of animal vocal sequences : insights from the structure of wild chimpanzee pant hoots 

      Fedurek , Pawel; Zuberbuhler, Klaus; Semple, Stuart (2017-11-06) - Journal article
      Background Vocal sequences - utterances consisting of calls produced in close succession - are common phenomena in animal communication. While many studies have explored the adaptive benefits of producing such sequences, ...
    • Vervet monkeys greet adult males during high-risk situations 

      Mercier, Stéphanie; Neumann, Christof; van de Waal, Erica; Chollet, Emmeline; de Bellefon, Jade Meric; Zuberbuhler, Klaus (2017-10) - Journal article
      Many animal species produce ritualized signals during dyadic encounters but the functions of such ‘greeting’ behaviour vary considerably, or are often unknown. One established function is to acknowledge existing dominance ...