Table 2 Model estimates on the variation in vocal consistency as a function of song repetition within song-type bouts

From: Sexual selection for both diversity and repetition in birdsong

Fixed effects

    

Random effects

Variable

Estimate

T

2.5% CI

97.5% CI

Variable

Variance (SD)

Intercept

0.005

0.552

−0.012

0.021

Individual

0.00077 (0.028)

Number of repetitions

0.002

3.863

0.001

0.003

Residual

0.0055 (0.074)

  1. For each fixed effect we show the model estimate, representing the size and direction of the effect, the T statistic and the 95% CI around the estimate. Vocal consistency increased significantly along with the number of repetitions in the song-type bout, as the 95% CI do not overlap with zero. The marginal R squared (R2m) of the full model was 0.02 and the conditional R-squared represented (R2c) was 0.14. The estimated variance and the standard deviation (SD) explained by the random effects are shown in the last two columns.
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