Figure 3
Statistical individual recognisability before and after pair formation. Percentage of correct assignments was obtained from a discriminant function analysis. Light grey bars indicate values of correct assignment before pair formation, dark grey bars after. Calls can be attributed to the correct individual by discriminant function analysis significantly better than expected by chance (red, green or blue line respectively, indicated by red asterisk) in all conditions. The amount of correct assignment though significantly decreased in trill calls after pair formation and increased in food calls (GLMM, indicated by black asterisk). We did not observe a significant change in the level of correct assignment in phee calls.
