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. 2022 Aug 4;10:e13685. doi: 10.7717/peerj.13685

Table 2. Binomial generalized linear mixed-effects models of the two best-ranked models M1 and M2.

Models show the effects of the local population size of Greylag Geese at the time of moult (MaxGrey), the yearly number of breeding pairs of Greylag Geese (PairsGrey), the yearly number of breeding pairs of Egyptian Geese (PairsEgypt), the initial number of hatchlings in each brood of Greylag Geese (Hatchlings) and whether a pair dispersed with their young or not (Dispersal). CI, 95% confidence interval.

Hatchling surival (%)
Model M1 M2
Fixed Effects
Variables Estimate CI (95%) p Estimate CI (95%) p
(Intercept) 0.55 0.16–0.93 0.006 0.53 0.18–0.88 0.003
MaxGrey −0.65 −1.01 to −0.30 <0.001
Hatchlings 0.19 0.01–0.38 0.043 0.19 0.01–0.38 0.044
Dispersal 0.69 0.39–0.99 <0.001 0.68 0.38–0.98 <0.001
Dispersal * Hatchlings −0.30 −0.61–0 0.048 −0.31 −0.61 to −0.01 0.044
PairsGrey −0.50 −0.83 to −0.18 0.002
PairsEgypt −0.41 −0.73 to −0.10 0.010
Random Effects M1 M2
NID 104 104
τ 00 ID 0.76 0.73
NY R 17 17
τ 00 Y R 0.30 0.21
Observations 938 938
Marginal R2/ Conditional R2 0.178/
0.379
0.186/
0.367