title: Group size of a permanent large group of agile mangabeys (Cercocebus agilis) at Bai Hokou, Central African Republic.
abstract: White-eyelid mangabeys (genus Cercocebus) live in groups of highly variable size. Because of their semi-terrestrial behaviour and preference for dense forest habitats, re-liable data on group size are scarce. During a 5-month study, we collected 17 group counts on a habituated group of agile mangabeys (C. agilis) at Bai Hokou in the Central African Republic. We found a stable group size of approximately 135 individuals. This permanent large grouping pattern is known to occur among several populations of white-eyelid mangabeys and is congruent with extreme group sizes reported in mandrills at Lopé in Gabon.
authors.affiliation: Behavioural Biology Unit, University of Liège, Liège, Belgium. lieven_devreese@hotmail.com
authors.forename: Lieven
authors.initials: L
authors.lastname: Devreese
authors.forename: Marie-Claude
authors.initials: MC
authors.lastname: Huynen
authors.forename: Jeroen M G
authors.initials: JM
authors.lastname: Stevens
authors.forename: Angelique
authors.initials: A
authors.lastname: Todd
mesh_terms: D000818:Animals; D002488:Central African Republic; D016664:Cercocebus / Q000502:physiology*; D005260:Female; D008297:Male; D011156:Population Density; D012919:Social Behavior