Thomas Bugnyar
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View article: Associations between gut microbiota and personality traits: insights from a captive common marmoset ( <i>Callithrix jacchus</i> ) colony
Associations between gut microbiota and personality traits: insights from a captive common marmoset ( <i>Callithrix jacchus</i> ) colony Open
Recent studies have suggested associations between consistent inter-individual behavioral variation (i.e., animal personality) and gut microbiota. Non-human primates living under controlled conditions are valuable models to investigate die…
View article: Unsung Songbirds: Advances in the Study of Corvid Communication
Unsung Songbirds: Advances in the Study of Corvid Communication Open
Historically, much research in animal communication has focused on the information content and ultimate function of vocalisations. These include defending territories, sounding the alarm, attracting mates, and advertising identity. The pro…
View article: Rearing group size in young ravens: stress load or social opportunity?
Rearing group size in young ravens: stress load or social opportunity? Open
Understanding how variations in early social environments generate different experiences for offspring (affecting their behaviour and the way others behave towards them) is crucial for uncovering mechanisms underlying the development of so…
View article: Startling ravens <i>Corvus corax</i> at foraging: differences in anti‐predator behaviour can be explained by age rather than personality
Startling ravens <i>Corvus corax</i> at foraging: differences in anti‐predator behaviour can be explained by age rather than personality Open
When individuals of the same population do not respond uniformly to the same situation, they might experience divergent fitness outcomes, such as different survival rates when facing danger. When these behavioural differences between indiv…
View article: Comparing the Performances of Chimpanzees (<i>Pan troglodytes</i>) and Gorillas (<i>Gorilla gorilla gorilla</i>) in Two Self‐Awareness Tasks
Comparing the Performances of Chimpanzees (<i>Pan troglodytes</i>) and Gorillas (<i>Gorilla gorilla gorilla</i>) in Two Self‐Awareness Tasks Open
Self‐awareness has most commonly been studied in nonhuman animals by implementing mirror self‐recognition (MSR) tasks. The validity of such tasks as a stand‐alone method has, however, been debated due to their high interindividual variatio…
View article: Investigating the effects of prenatal testosterone exposure (via 2D:4D) and socio-relational factors on 3–6-year-old preschoolers' prosocial choices
Investigating the effects of prenatal testosterone exposure (via 2D:4D) and socio-relational factors on 3–6-year-old preschoolers' prosocial choices Open
Prenatal androgen exposure, approximated via 2D:4D, was associated with prosocial behavior. In contrast to previous research in older children, higher exposure was related to stronger prosocial tendencies, which corresponds to earlier find…
View article: Kea, bird of versatility. Kea parrots (Nestor notabilis) show high behavioural flexibility in solving a demonstrated sequence task
Kea, bird of versatility. Kea parrots (Nestor notabilis) show high behavioural flexibility in solving a demonstrated sequence task Open
Social learning is an important aspect of dealing with the complexity of life. The transmission of information via the observation of other individuals is a cost-effective way of acquiring information. It is widespread within the animal ki…
View article: Testing the effects of kinship, reciprocity and dominance on prosocial food provisioning in azure‐winged magpies (<i>Cyanopica cyana</i>), carrion crows (<i>Corvus corone</i>) and common ravens (<i>C. corax</i>)
Testing the effects of kinship, reciprocity and dominance on prosocial food provisioning in azure‐winged magpies (<i>Cyanopica cyana</i>), carrion crows (<i>Corvus corone</i>) and common ravens (<i>C. corax</i>) Open
Prosocial behaviour (i.e. benefitting others without receiving a direct gain) has long been perceived as an evolutionary puzzle but is nevertheless relatively common among non‐human animals. Prosocial food provisioning has recently been do…
View article: Social attention across development in common ravens and carrion crows
Social attention across development in common ravens and carrion crows Open
Underlying social learning and other important aspects of successful adaptation to social life is social awareness, where individuals are required to pay attention and respond flexibly to others in their environment. We tested the influenc…
View article: Are you better than me? Social comparisons in carrion crows (Corvus corone)
Are you better than me? Social comparisons in carrion crows (Corvus corone) Open
Comparing oneself to others is a key process in humans that allows individuals to gauge their performances and abilities and thus develop and calibrate their self-image. Little is known about its evolutionary foundations. A key feature of …
View article: Are You Better Than Me? Social Comparisons in Carrion Crows (Corvus corone)
Are You Better Than Me? Social Comparisons in Carrion Crows (Corvus corone) Open
Comparing oneself to others is a key process in humans that allows individuals to gauge their performances and abilities and thus develop and calibrate their self-image. Very little is known about its evolutionary foundations. A key featur…
View article: Age, but not hand preference, is related to personality traits in common marmosets (<i>Callithrix jacchus</i>)
Age, but not hand preference, is related to personality traits in common marmosets (<i>Callithrix jacchus</i>) Open
The proximate mechanisms underlying animal personalities, i.e. consistent inter-individual differences in behaviour, are a matter of discussion. Brain lateralization, expressed as the preferred use of the contralateral limb, has been sugge…
View article: Beyond the dichotomy between field and lab — the importance of studying cognition in context
Beyond the dichotomy between field and lab — the importance of studying cognition in context Open
Animals are governed by their individual and species-specific predispositions, constrained by their natural and social environment, and influenced by their daily-life experiences. Drawing a broad comparative arc from domestic dogs and corv…
View article: Early social environment affects attention to social cues in juvenile common ravens, <i>Corvus corax</i>
Early social environment affects attention to social cues in juvenile common ravens, <i>Corvus corax</i> Open
Social competence, i.e. defined as the ability to adjust the expression of social behaviour to the available social information, is known to be influenced by early-life conditions. Brood size might be one of the factors determining such ea…
View article: No Evidence for Contagious Yawning in Juvenile Ravens (Corvus corax): An Observational Study
No Evidence for Contagious Yawning in Juvenile Ravens (Corvus corax): An Observational Study Open
The overt and reflexive matching of behaviors among conspecifics has been observed in a growing number of social vertebrates, including avian species. In general, behavioral contagion—such as the spread of yawning—may serve important funct…
View article: Subordinate ravens (Corvus corax) increase alarm calling when temporarily separated from group members
Subordinate ravens (Corvus corax) increase alarm calling when temporarily separated from group members Open
BackgroundAlthough predator avoidance can have immense impacts on fitness, individual variation in anti-predator behaviour remains largely unexplained. Existing studies investigating predator responses and learning have occurred in individ…
View article: Dominance in a socially dynamic setting: hierarchical structure and conflict dynamics in ravens' foraging groups
Dominance in a socially dynamic setting: hierarchical structure and conflict dynamics in ravens' foraging groups Open
Dominance hierarchies typically emerge in systems where group members regularly encounter and compete for resources. In birds, the ‘open’ and dynamic structure of foraging groups may prevent the emergence of structured hierarchies, althoug…