Occurrence of behaviours in 7 captive-born clusters and statistical comparisons.

The mean percentages (M) of occurrence (with regard to the 240 scans) and standard error means (SEM) per cluster are reported below for a selection of collected variables. The behavioural diversity is the mean number of distinct behaviours observed during the 240 scans. The abbreviations “B.” and “d.” stand for behaviour and distance. Kruskal-Wallis statistics and p-values are indicated in the first two left columns, bold font highlighting significance. Significant p-values in post-hoc Mann-Whitney U tests before (small-letters, p<0.05) and after (capital letters, p<0.005) a Bonferroni adjustment are indicated in columns at the right of the occurrence percentages. The letters represent the groups versus which the p-values are significantly different for a given variable. P-values between quotation marks (« ») indicate significance (p<0.05) if small group size correction was not applied. In the “main behaviours while slumped” section, the number of monkeys expressing the slumped body posture is specified for clusters C, E and F as all monkeys did not display this posture (n = 33 displayed the slumped posture). Here the mean percentages of occurrence with regard to the number of scans spent in the slumped body posture are reported for each cluster.