Table 4.

Number and proportion of events per tool origin category and sex for mature chimpanzees, by tool type

	Tool origin
	Arrived	Gathered and manufactured	Acquired	Transferred	Total no. of tools
Fishing probe
Females	93 (86.9%)	6 (5.6%)	7 (6.5%)	1 (0.9%)	107
Males	64 (82.1%)	9 (11.5%)	3 (3.8%)	2 (2.6%)	78
Puncturing stick
Females	4 (22.2%)	1 (5.6%)	11 (61.1%)	2 (11.1%)	18
Males	4 (20.0%)	1 (5.0%)	12 (60.0%)	3 (15.0%)	20
Perforating twig
Females	0	5 (50%)	5 (50%)	0	10
Males	0	2 (33.3%)	4 (66.7%)	0	6
Beehive pound
Females	5 (83.3%)	1 (16.7%)	0	0	6
Males	0	1 (100%)	0	0	1
Other honey gathering tool
Females	0	1 (100%)	0	0	1
Males	0	1 (100%)	0	0	1
Leaf sponge
Females	0	6 (100%)	0	0	6
Males	0	6 (100%)	0	0	6
Total per category	170	40	42	8	260