OOIR: Observatory of International Research

Papers

(The median citation count of Primates is 1. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-09-01 to 2025-09-01.)

Article	Citations
Distribution and habitat suitability of the endangered lion-tailed macaque Macaca silenus and other primate species in the Kodagu region of the Western Ghats, India	23
Through cross-disciplinary collaboration	21
Friends in high places: Interspecific grooming between chimpanzees and primate prey species in Budongo Forest	15
Metacognition in nonhuman primates: a review of current knowledge	11
Temporal variation and age influence activity budget more than sex and reproductive status in wild brown howler monkeys (Alouatta guariba clamitans) inhabiting a large, continuous forest	11
Adult–adult play in captive lowland gorillas (Gorilla gorilla gorilla)	11
Long-term observations in the Ndoki forest resolve enduring questions about truffle foraging by western lowland gorillas	10
Factors influencing establishment success in reintroduced black-faced spider monkeys Ateles chamek	10
Precursors and aftermath of severe targeted aggression in captive cotton-top tamarins	10
An evaluation of thermal imaging as a welfare monitoring tool for captive chimpanzees	10
Population size and habitat preference of the Omo River guereza (Colobus guereza guereza) in a multi-habitat matrix in the central highlands of Ethiopia	10
Partner choice in genito-genital rubbing among female bonobos (Pan paniscus) is highly dependent on physical proximity	10
Correction: Owl monkeys: biology, adaptive radiation, and behavioral ecology of the only nocturnal primate in the Americas, edited by Eduardo Fernandez-Duque	9
Primate tales: memoirs from leaders in primatology	9
First record of the southern muriqui (Brachyteles arachnoides) in the state of Minas Gerais, Brazil	9
A case of suspected chimpanzee scavenging in the Issa Valley, Tanzania	9
New records of the southern muriqui (Brachyteles arachnoides) in Serra da Mantiqueira through thermal drones	8
Notes on the conservation threats to the western lesser spot-nosed monkey (Cercopithecus petaurista buettikoferi) in the Bijagós Archipelago (Guinea-Bissau, West Africa)	8
Portrayals of wild primates in documentary films: reason for concern?	8
Geographic, climatic, and phylogenetic drivers of variation in colobine activity budgets	7
Behavioral responses to riparian and anthropogenic edge effects in mantled howler monkeys (Alouatta palliata) in a disturbed riverine forest	7
A report of stillbirth and subsequent maternal cannibalism observed in a free-ranging group of Japanese macaques at Awajishima, Japan	7
Different: What apes can teach us about gender, by Frans de Waal	7
Genetic characterization of Macaca arctoides: A highlight of key genes and pathways	7
Parallel lasers and digital photography to estimate limb size of chimpanzees (Pan troglodytes) at Ngogo, Kibale National Park, Uganda	7

Primate population dynamics in Ngogo, Kibale National Park, Uganda, over nearly five decades	6
Sketches of chimpanzee (Pan troglodytes) hoo’s: vowels by any other name?	6
Reactions to a dead adult female in Japanese macaques at Arashiyama: Why did a non-affiliated female groom the corpse?	6
Comparative analysis of intragroup intermale relationships: a study of wild bonobos (Pan paniscus) in Wamba, Democratic Republic of Congo and chimpanzees (Pan troglodytes) in Kalinzu Forest Reserve, U	6
Acknowledgements	6
The relationship of coping style and social support variation to glucocorticoid metabolites in wild olive baboons (Papio anubis)	6
Treatment of hepatitis in ex-biomedical chimpanzees at a Japanese sanctuary thanks to support from the general public	6
Correction: Path To Acceptance and Refined Practices for Habituating Western Lowland Gorillas	5
Acknowledgements	5
Monitoring the population and distribution of the proboscis monkey (Nasalis larvatus) in the Klias Peninsula, Sabah, Borneo, Malaysia: insights from an 18-year study	5
Correction to: Fission–fusion dynamics in a wild group of Japanese macaques (Macaca fuscata) on Kinkazan Island caused by the repeated separation of an alpha male being followed by females	5
Correction: A cooperation experiment with white-handed gibbons (Hylobates lar)	5
A prosocial function of head-gaze aversion and head-cocking in common marmosets	5
Analysis of palmprints and soleprints of black-tufted marmosets (Callithrix penicillata): are there similarities to humans?	5
Correction to: My path to primatology: some stories from the field	5
Acknowledgements	5
Correction: Primate population dynamics in Ngogo, Kibale National Park, Uganda, over nearly five decades	5
Multiparous and primiparous mothers partially differ in how they allocate maternal behaviour in captive western lowland gorillas (Gorilla gorilla gorilla)	4
Mixed-species association and a record of a hybrid offspring between Trachypithecus pileatus and Trachypithecus phayrei in Bangladesh	4
The Primates 2024 most-cited paper award	4
Correction: Snapshots: most-cited Primates papers by decade (1950s–2020s)	4
Activity budget and diet of the two groups of olive baboons (Papio anubis) in Chato Natural forest, western Ethiopia	4
Responses to dying and dead adult companions in a free-ranging, provisioned group of Japanese macaques (Macaca fuscata)	4
Mantled howler monkey males assess their rivals through formant spacing of long-distance calls	4
Population differences in putty-nosed monkey (Cercopithecus nictitans) call order	4
Searching for evolutionary perspectives of human sociality through the eyes of gorillas	4
Raising the level: orangutans solve the floating peanut task without visual feedback	4
More than a simple fixed action pattern: Yawning in drills	4
New records of the white-cheeked macaque provide range extension for the endangered primate in Gaoligong Mountains	4
From stones to sketches: investigating tracing behaviours in Japanese macaques	4
The Primates 2021 Social Impact Award	4
Genetic analysis of hybridization between white-handed (Hylobates lar) and pileated (Hylobates pileatus) gibbons in a contact zone in Khao Yai National Park, Thailand	4
Conservation and evolution: Inbreeding, small populations, and sex differences in life history	4
Good case studies reveal something important	3
My life with primates	3
Death of a one-armed blackback male due to severe injuries in a group of wild western lowland gorillas (Gorilla gorilla gorilla) in Moukalaba-Doudou National Park, Gabon	3
Extending the conservation impact of great ape research: Flagship species sites facilitate biodiversity assessments and land preservation	3
Male adoption in the black and gold howler monkey (Alouatta caraya)	3
The Primates 2023 Social Impact Award	3
Fragmented forest affects the southern black-horned capuchin (Sapajus nigritus cucullatus) in the Argentinean Atlantic Forest	3
A three-dimensional kinematic analysis of bipedal walking in a white-handed gibbon (Hylobates lar) on a horizontal pole and flat surface	3
Assessing the effects of survey-inherent disturbance on primate detectability: Recommendations for line transect distance sampling	3
Primates and elephants in East Asia: from Neolithic to rural depopulation	3
Thanatology in the northern muriqui (Brachyteles hypoxanthus)	3
Chimpanzees employ context-specific behavioral strategies within fission–fusion societies	3
Less bins, less baboons: reducing access to anthropogenic food effectively decreases the urban foraging behavior of a troop of chacma baboons (Papio hamadryas ursinus) in a peri-urban area	3
Correction: Population genetics of captive spider monkeys in Japan for ex situ conservation	3
Urinary health indicators in folivorous-frugivorous primates with and without food supplementation	3
A cooperation experiment with white-handed gibbons (Hylobates lar)	3
A simple suitability index to guide site selection for primate translocations: an example from northeastern Brazil	3

Mothers stick together: how the death of an infant affects female social relationships in a group of wild bonobos (Pan paniscus)	3
Well-digging in a community of forest-living wild East African chimpanzees (Pan troglodytes schweinfurthii)	3
Leopard predation on wild Sichuan snub-nosed monkeys	3
Reflections on connections	2
Predatory attack on a bearded capuchin monkey by a Boa constrictor	2
Reduction of bitter taste receptor gene family in folivorous colobine primates relative to omnivorous cercopithecine primates	2
Advancements in comparative omics analysis of human and non-human primate brains and their implications for the evolution of cognitive functions	2
Hierarchical object combination and tool use in the great apes and human children	2
Infant adoptions in wild bonnet macaques (Macaca radiata)	2
A review of great ape behavioural responses and their outcomes to anthropogenic landscapes	2
Do immigrant female bonobos prefer older resident females as important partners when integrating into a new group?	2
Correction to: Determinants of habitat occupancy and spatial segregation of primates in the central Western Ghats, India	2
My journey into primatology	2
Attitudes towards urban howler monkeys (Alouatta caraya) in Paraguay	2
Habitat suitability modeling for the endangered Bengal slow loris (Nycticebus bengalensis) in the Indo-Chinese subregion of India: a case study from southern Assam (India)	2
Nest raiding by bonnet macaques (Macaca radiata) and the response of nest guarding birds in a suburban habitat	2
Male care in a free-ranging group of Japanese macaques (Macaca fuscata)	2
A new addition to the toolbox: stone tool use in blonde capuchin monkeys (Sapajus flavius)	2
Characterizing group and individual engagement in intergroup encounters between small groups of ring-tailed lemurs (Lemur catta) on St. Catherines Island, USA	2
Monkey memoirs: wild life in an Amazon wilderness, Thomas R. Defler	2
Why do people visit primate tourism sites? Investigating macaque tourism in Japan and Indonesia	2
Food preferences and nutrient composition in captive Southern brown howler monkeys, Alouatta guariba clamitans	2
A case of intercommunity lethal aggression by chimpanzees in an open and dry landscape, Issa Valley, western Tanzania	2
Carrying the dead: behavior of a primiparous capuchin monkey mother and other individuals towards a dead infant	2
My path to primatology: some stories from the field	2
Correction: Walking with Gorillas: The Journey of an African Wildlife Vet, by Dr Gladys Kalema-Zikusoka	2
Life and death of a disabled wild capuchin monkey infant	2
Predation of Macaca cyclopis on flying bees	2
Domestic chicken predation and prey sharing by urban capuchin monkeys (Sapajus sp.)	2
Cognitive enrichment in a social setting: assessing the use of a novel food maze in sanctuary-housed chimpanzees	2
Mantled howler monkeys (Alouatta palliata) alter activity and spatial cohesion across a continuous forest and forest fragment in Costa Rica	2
Preliminary findings of age and male sexual characteristics andand potential effect to semen characteristics and cryopreservation of the critically endangered Bornean orangutan in Malaysia	2
My primate studies	1
Correction to: Habitat suitability modeling for the endangered Bengal slow loris (Nycticebus bengalensis) in the Indo‑Chinese subregion of India: a case study from southern Assam (India)	1
Close Encounters with Humankind: A Paleoanthropologist Investigates Our Evolving Species, by Sang-Hee Lee, with Shin-Young Yoon	1
Going forward: perceptual bias for forward-facing motion in chimpanzees	1
The Primates 2023 most-cited paper award	1
Bioacoustic characterization of the black-and-white ruffed lemur (Varecia variegata) vocal repertoire	1
Distribution and diversity of primates and threats to their survival in the Awi Zone, northwestern Ethiopia	1
Seasonal food changes and feeding behaviour adaptations of savanna chimpanzees at Nguye in Ugalla, Tanzania	1
Immunoglobulin heavy constant gamma gene evolution is modulated by both the divergent and birth-and-death evolutionary models	1
Groups, grouping and networks: dynamic unanswered questions for primatologists	1
Toxic tasting: how capuchin monkeys avoid grasshoppers’ chemical defenses	1
Stillbirth of a mandrill (Mandrillus sphinx) in the wild: perinatal behaviors and delivery sequences	1
Monkey-deer rodeo: exploring the mounting behaviours of Japanese macaques (Macaca fuscata) on Sika deer (Cervus nippon)	1
Maternal exploitation: impact of maternal food snatching behaviour on the growth of their offspring in Japanese macaques	1
Exploring greetings and leave-takings: communication during arrivals and departures by chimpanzees of the Bossou community, Guinea	1
Chimpanzee: lessons from our sister species, by Kevin D. Hunt	1
Diverse grouping and mating strategies in the Critically Endangered Hainan gibbon (Nomascus hainanus)	1
Birth of a wild black howler monkey (Alouatta pigra) at an anthropogenic site	1
Snapshots: most-cited Primates papers by decade (1950s–2020s)	1
Chimpanzee memoirs. Stories of studying and saving our closest living relatives, by Stephen Ross & Lydia Hopper (eds.)	1
Heavy metal ecotoxicology of vervet monkeys (Chlorocebus pygerythrus) across field sites in South Africa	1
The effects of early life rearing experiences and age on sociality in captive olive baboons (Papio anubis)	1
Determinants of habitat occupancy and spatial segregation of primates in the central Western Ghats, India	1
Savanna chimpanzee (Pan troglodytes) crop feeding at Dindefelo, Senegal: challenges and implications for conservation	1
Indigenous names matter, too: Tapanuli orangutan names reflect local community perceptions	1
Immunohematological features of free-living Alouatta belzebul (Linnaeus, 1766) red-handed howler monkeys in the Eastern Amazon	1
Water scooping: tool use by a wild bonobo (Pan paniscus) at LuiKotale, a case report	1
News and Perspectives: Words matter in primatology	1
Late bloomers in play: social isolation and playful skills in an adult bonobo	1
Population dynamics and ranging behaviours of provisioned silvered langur (Trachypithecus cristatus) in Peninsular Malaysia	1
Deep learning for automatic facial detection and recognition in Japanese macaques: illuminating social networks	1
Owl Monkeys: Biology, Adaptive Radiation, and Behavioral Ecology of the Only Nocturnal Primate in the Americas, edited by Eduardo Fernandez-Duque	1
Slow loris (Nycticebus borneanus) consumption by a wild Bornean orangutan (Pongo pygmaeus wurmbii)	1
Correction to: Why bonobos show a high reproductive skew towards high-ranking males: analyses for association and mating patterns concerning female sexual states	1
I remember Africa: A field biologist’s half-century perspective	1
Factors affecting call usage in wild black-and-white ruffed lemurs (Varecia variegata) at Mangevo, Ranomafana National Park	1
No food left behind: foraging route choices among free-ranging Japanese macaques (Macaca fuscata) in a multi-destination array at the Awajishima Monkey Center, Japan	1
Social network dynamics, infant loss, and gut microbiota composition in female Colobus vellerosus during time periods with alpha male challenges	1
Correction: A case of suspected chimpanzee scavenging in the Issa Valley, Tanzania	1
Announcement: ownership of Primates transferred to Primate Society of Japan from Japan Monkey Centre	1
Forest maturity has a stronger influence on the prevalence of spider monkeys than howler monkeys in an anthropogenically impacted rainforest landscape	1
Enteric protists in wild western chimpanzees (Pan troglodytes verus) and humans in Comoé National Park, Côte d'Ivoire	1
Sleeping site use of François’ langurs (Trachypithecus francoisi) inhabiting limestone forest of Nonggang, southwest China: the importance of foraging efficiency	1
Self-interest precludes prosocial juice provisioning in a free choice group experiment in bonobos	1
Great apes reach momentary altered mental states by spinning	1