**Predictors** | **Estimate [95% CI]** | **χ**^{2} | *df* | *P* | **Effect size***r* |
---|

**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 year**^{a} | **–** | **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
*R*^{2} was 0.24 (marginal) and 0.34 (conditional), while *R*_{adj} 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 *R*^{2} 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)