Primate Behavior and Ecology

The paper analyzes infant corpse carrying in Pan to show it is influenced by maternal behavior, death context, and life history, suggesting cognitive frameworks for death recognition evolved after the Pan-Homo split.

The paper examines how social integration in temporal multiplex networks predicts offspring survival in female spider monkeys, finding positive links between social integration and offspring survival.

This study measures stress in mountain gorillas through fecal glucocorticoid metabolites and finds increased stress with higher tourism intensity and visit frequency.

This study examines whether Tonkean macaques and brown capuchins can evaluate others' skilfulness by observing human actors opening food containers, finding they use social information about skill in their decisions.

The paper introduces a new group-based operant task for mice, showing that repeated use leads to shifts in workload toward subordinates and rank consolidation.

This study examines the ontogenic shift in the use of a symbolic wing-fluttering gesture in great tits, showing it functions to prompt mates to feed nestlings in adults and parents to feed fledglings.

This study shows macaques use information-seeking as part of their foraging strategy in ambiguous terrains, with individual differences in preference for information, reward, or proximity.

This study quantifies the non-linear age-trajectory of mother-infant relationships in wild Assamese macaques, finding no sex differences and a transition to independence by mid-infancy.

The paper examines social relationships between young Asian elephant calves and conspecific females, finding that calves form differentiated relationships with escorts who provide allomaternal care, while other females rarely interact with calves.

This study examines how social networks in juvenile vervet monkeys reorganize during development, showing a shift from kin-based to proximity-based interactions.

The paper studies stone tool selectivity in white-faced capuchin monkeys to infer archaeological signatures of tool use in primates and humans.

This study examines how social dominance affects sleep quality and quantity in wild chacma baboons, finding that dominant individuals experience more interrupted and less restful sleep.

The paper investigates cultural attitudes and individual differences in tool use among wild chimpanzees using a modified honey-trap experiment across three communities.

The paper maps the distribution of Grauer's gorillas and eastern chimpanzees in Tayna Nature Reserve, finding that rugged terrain and human activities influence their presence.

The paper compares the morphology of the caudal rami of the superior temporal sulcus across humans, chimpanzees, and other great apes using quantitative measurements.

The paper examines how changes in primate brain structure, specifically subcortical and neocortex volumes, relate to social evolution through pair-living and group-living lifestyles.

This study quantifies the oculomotor range of head-fixed common marmosets using naturalistic stimuli, finding limited changes compared to previous studies.

The paper analyzes multilevel social systems in mammals and birds, distinguishing between fractally modular and casually modular structures, and links them to neocortex size and cognitive demands.

This study shows long-tailed macaques exhibit prosocial behavior in a group service task, preferring to help kin, supporting the dyadic interdependence hypothesis over cooperative breeding and self-domestication hypotheses.

The paper detects Zipf's law of brevity in chimpanzee gestures by testing methodological and population-specific factors across three communities.

This study examines male vervet monkey leadership in high-risk terrain, finding that dominant males lead more often, especially in risky contexts, suggesting cooperative service rather than paternal care.

This study examines how group social traits and climate variables predict foraging behavior in wild baboons, finding interactions between rainfall, temperature, group size, and social network density on foraging outcomes.

This study investigates cooperative decision-making in macaques using a novel paradigm, finding that they weigh the costs and benefits of cooperation based on reward contingencies.

This study finds that banded mongoose groups use collective self-assessment rather than mutual assessment during intergroup contests, escalating conflicts based on their own group strength.

This study examines how maternal glucocorticoids and behavior influence developmental trade-offs in wild baboon infants, finding that low maternal capital correlates with reduced play, independence, and growth.

This study examines how different anthropogenic environments affect the activity patterns and vigilance of Cape chacma baboons, finding that human presence influences specific behaviors like vigilance and feeding without altering overall time budgets.

This study observes anxiety behaviors in a single aye-aye mother during the peripartum period, finding increased nest-building, self-grooming, and vigilance, supporting the hypothesis of anxiety-related behaviors.

This paper introduces a causal Bayesian framework to infer the causes of animal social network structure from continuous-time focal-animal sampling data.

This study investigates how low social status in female rhesus macaques affects reproductive success, hormone levels, and maternal care, finding lower reproductive success and altered estradiol patterns in subordinates.