How many chimpanzees can live in one community?

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A common chimpanzee (Pan troglodytes) sits on a rock holding a long blade of grass in its mouth, with dense green foliage in the background. — chimpanzee The West African, or masked, chimpanzee (*Pan troglodytes verus*) is a critically endangered subspecies of chimpanzee.

Chimpanzees live in flexible social groups known as communities, which are based on associations between adult males within a specific home range.

A single community can range in size from 20 or fewer members to well over 100 individuals. These communities are composed of several smaller, unstable subgroups that vary in size and composition, allowing individuals to join or leave with significant freedom. Within these groups, there is typically a ratio of two or three adult females for every adult male, with the total number of adults roughly equal to the number of immature individuals.1