Predictors | Estimate [95% CI] | χ2 | df | P | Effect sizer |
|---|
Solar radiation | 0.70 [0.44, 0.97] | 26.88 | 1 | < 0.001 | 0.28 |
Presence of rain | −0.12 [−0.35, 0.11] | 1.09 | 1 | 0.30 | 0.06 |
TWC | −0.16 [−0.44, 0.12] | 1.27 | 1 | 0.26 | 0.06 |
CWC | 0.32 [0.08, 0.56] | 6.90 | 1 | 0.009 | 0.13 |
Time in arable lands | 0.13 [−0.13, 0.38] | 0.97 | 1 | 0.32 | 0.06 |
Breeding stage | 0.53 [0.19, 0.86] | 9.33 | 1 | 0.002 | 0.20 |
Sex | 0.04 [−0.36, 0.44] | 0.03 | 1 | 0.86 | 0.01 |
Sampling yeara | – | 8.84 | 2 | 0.012 | – |
Intercept | −0.02 [−0.73, 0.69] | | | | |
- a: estimated mean values (logit scale), LCL, UCL: 2016 = -0.179, -0906, 0.548; 2017 = 1.199, 0.377, 2.003; 2018 = 0.959, a 0.287, 1.631
- Estimates refer to standardized variables. Breeding stage was coded as 0 = incubation or 1 = nestling-rearing, sex as 0 = males or 1 = females. Individual identity was included as a random intercept effect. The model was not overdispersed (ϕ = 1.0). Model R2 was 0.24 (marginal) and 0.34 (conditional), while Radj was 0.13 (all values estimated according to [45]). Effect size for covariates was calculated as the absolute value of Pearson’s r obtained from semi-partial R2 values from the “r2glmm” R package [34]. Important effects (i.e., with 95% CI of estimates not including zero) are shown in bold. One individual with a single foraging trip was excluded (n = 488 trips from 35 individuals)
