Table 2. Information on Kalinzu chimpanzee focal individuals (name, sex, age), name of mother, total observation time per individual, object manipulation rates and mean bout length.
| Name | Sex | Mother | Age (yrs) | Observation time (hrs) | Manipulation rate (bouts/hr) | Mean bout length (min) |
|---|---|---|---|---|---|---|
| Mugisha | M | Mitsu | 0.7 | 4.7 | 2.11 | 3.4 |
| Hayato | M | Haro | 0.9 | 9.7 | 2.05 | 1.7 |
| Eta | M | Esunzu | 1.3 | 9.5 | 0.84 | 1.4 |
| Picasso | M | Pinka | 2.6 | 9.0 | 0.89 | 1.6 |
| Max | M | Mami | 3.5 | 6.0 | 3.33 | 2.0 |
| Taro | M | Tae | ~5.3 | 10.0 | 0.80 | 1.4 |
| Milk | M | Mitsu | 6.1 | 3.4 | 0.59 | 1.4 |
| Ayu | F | Asa | 2.6 | 5.4 | 0.92 | 1.0 |
| Iyo | F | Ida | 2.9 | 9.2 | 0.98 | 2.7 |
| Gale | F | Gai | 4.0 | 9.7 | 0.51 | 2.5 |
| Haruka | F | Haro | 4.8 | 9.4 | 0.42 | 2.8 |
| Ua | F | Ume | 6.1 | 5.8 | 0.35 | 1.0 |
| Piriko | F | Pinka | ~6.8 | 7.4 | 0.14 | 1.0 |
| Iku | F | Ida | 7.1 | 10.0 | 0.40 | 1.4 |
| Mean | 3.9 | 7.8 | 1.02 | 1.8 |