Table 1.

Demographic composition of the six chimpanzee study groups

Group	Adult male	Subadult male	Adult female	Subadult female	Immature	Total
C2	2	4	6	0	2	14
C3	1	2	5	3	1	12
C4	3	1	6	0	1	11
C5	1	1	5	0	0	7
C6	2	1	4	1	0	8
C8	1	1	7	0	1	10

Definitions of age–sex categories based on Goodall (1986): adult male ≥16 years; adult female ≥14 years; subadult male 8–15 years; subadult female 8–13 years; immature <8 years.