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The acoustic structure of vocalizations is often shaped by a species' socio\u2010ecology. However, numerous species remain poorly documented, including the gray\u2010cheeked mangabey (\n                    <jats:italic>Lophocebus albigena<\/jats:italic>\n                    ), an arboreal primate endemic to the forests of Central and East Africa. We combined acoustic measurements with behavioral observations to provide a first quantitative and contextual description of the gray\u2010cheeked mangabey vocal repertoire in the Bugoma Central Forest Reserve (Uganda). Using a discriminant function analysis, we report four acoustically distinct call types: chuckles, grunts, screams, and whoop\u2010gobbles, which were also observed in different social contexts, suggesting a discrete, yet small, vocal repertoire. The two most frequently observed call types were chuckles and grunts. Chuckles were mainly produced during resting phases, and in vocal exchanges between distant individuals, suggesting they function to maintain group contact at medium or longer ranges. Grunts, in contrast, were associated with feeding and grooming, and often produced in short\u2010distance choruses, supporting the hypothesis that they facilitate group cohesion on a smaller spatial scale. The two other call types were more rarely observed: screams were associated with agonistic interactions, while whoop\u2010gobbles were produced more spontaneously, with no clear behavioral correlate that we could record, but may serve functions related to long\u2010distance communication. These findings provide new insights into a little\u2010studied species and pave the way for phylogenetic and functional comparisons with other cercopithecid primates. Nonetheless, many questions remain open and would benefit from further investigation.\n                  <\/jats:p>","DOI":"10.1002\/ajp.70204","type":"journal-article","created":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T08:35:48Z","timestamp":1788338148000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Vocal Repertoire of Gray\u2010Cheeked Mangabeys (\n                    <i>Lophocebus albigena<\/i>\n                    ) in the Bugoma Forest Reserve, Uganda"],"prefix":"10.1002","volume":"88","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-5877-3501","authenticated-orcid":false,"given":"Alexia","family":"Spelat","sequence":"first","affiliation":[{"name":"Centre for Comparative and Evolutionary Psychology, School of Psychology, Sport and Health Sciences University of Portsmouth Portsmouth UK"},{"name":"Department of Animal and Human Ethology University of Rennes Rennes France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arua","family":"Yolam","sequence":"additional","affiliation":[{"name":"Bugoma Primate Conservation Project Hoima Uganda"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thibaud","family":"Gruber","sequence":"additional","affiliation":[{"name":"Bugoma Primate Conservation Project Hoima Uganda"},{"name":"Swiss Center for Affective Sciences and Faculty of Psychology and Educational Sciences University of Geneva Geneva Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3893-0524","authenticated-orcid":false,"given":"Catherine","family":"Hobaiter","sequence":"additional","affiliation":[{"name":"Bugoma Primate Conservation Project Hoima Uganda"},{"name":"School of Psychology and Neuroscience University of St Andrews St Andrews UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5025-906X","authenticated-orcid":false,"given":"Gal","family":"Badihi","sequence":"additional","affiliation":[{"name":"School of Psychology and Neuroscience University of St Andrews St Andrews UK"},{"name":"Cooperative Evolution Laboratory, Deutsches Primatenzentrum GmbH G\u00f6ttingen Germany"},{"name":"Cooperative Cultures Research Group, Max Planck Institute for Evolutionary Anthropology Leipzig Germany"},{"name":"Department of Human Origins Max Planck Institute for Evolutionary Anthropology Leipzig Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,2]]},"reference":[{"key":"e_1_2_10_2_1","unstructured":"American Society of Primatologists.2021.Principles for the Ethical Treatment of Non\u2010Human Primates.https:\/\/www.asp.org\/2021\/04\/20\/principles-for-the-ethical-treatment-of-non-human-primates\/."},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cub.2008.08.020"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.anbehav.2025.123428"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1159\/000155461"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajp.1350080105"},{"key":"e_1_2_10_7_1","unstructured":"Boersma P. andD.Weenink.2013. 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