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Table 3 Final binomial generalized linear mixed model of the probability to perform dynamic foraging (DF) trips over static foraging (SF) trips

From: Inter-individual differences in foraging tactics of a colonial raptor: consistency, weather effects, and fitness correlates

PredictorsEstimate [95% CI]χ2dfPEffect sizer
Solar radiation0.70 [0.44, 0.97]26.881<  0.0010.28
Presence of rain−0.12 [−0.35, 0.11]1.0910.300.06
TWC−0.16 [−0.44, 0.12]1.2710.260.06
CWC0.32 [0.08, 0.56]6.9010.0090.13
Time in arable lands0.13 [−0.13, 0.38]0.9710.320.06
Breeding stage0.53 [0.19, 0.86]9.3310.0020.20
Sex0.04 [−0.36, 0.44]0.0310.860.01
Sampling yeara8.8420.012
Intercept−0.02 [−0.73, 0.69]    
  1. 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
  2. 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)