Table 2 Results of GLMM examining the effect of sex, time in day and season on daily vocal activity pattern.

From: Females occasionally create duets with males but they never sing solo-year-round singing behaviour in an Afrotropical songbird

Coefficients

Estimate

SE

Z

p

Intercept

2.171

0.415

5.23

 < 0.001

Sex [male]

 − 1.908

0.204

 − 9.36

 < 0.001

Hour

0.033

0.014

2.45

0.014

Season [Dry]

0.498

0.233

2.14

0.033

Sex*Hour

0.061

0.010

 − 5.96

 < 0.001

Sex*Season

0.247

0.112

2.21

0.027

  1. As a dependent variable we used hourly singing activity index (the total number of songs detected in four 1-min sound samples analysed per hour per recording location). Data were fitted by zero-inflated negative binomial distribution and log-link function. Significant results are in bold.
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