Fig 1.
Spectrograms of the indris' song.
Fig 2.
Spectrographically predicted versus real chorus size in the indris.
Fig 3.
The indris’ song duration is (A) presented as a function of Group size (dashed line), Real chorus size (solid line), and Predicted chorus size (dotted line). The Real chorus size is presented as a function of (B) the Acoustic complexity index (ACI) and (C) the Acoustic entropy index (H). Each regression line is represented with the associated 95% confidence interval range (shades). Error bars indicate standard errors.
Table 1.
Results of the LMM full models for CSr and GS.
Table 2.
Results of the LMM full models for the acoustic indices.