Table 1. Results of best models explaining health parameters (body mass, ectoparasite infection intensity, tarsus skin yellowness, face skin yellowness) of urban kestrel nestlings.
Significant values in bold (n = 154 individuals, 91 different nest sites between 2010–2015).
| Response variable | Estimate | SE | Chi2 | Df | P(>Chi2) | R2 for GLMM | AICc |
|---|---|---|---|---|---|---|---|
| Body mass | 54.13 | 355.90 | |||||
| (Intercept) | 0.12 | 0.10 | 0.224 | ||||
| Wing length | 0.74 | 0.06 | 147.41 | 1 | <0.001 | ||
| Wing length^2 | -0.30 | 0.04 | 44.90 | 1 | <0.001 | ||
| Sex a | 0.31 | 0.12 | 7.20 | 1 | 0.007 | ||
| Ecto-parasite infection | 12.86 | 243.60 | |||||
| (Intercept) | -1.25 | 0.26 | <0.001 | ||||
| Laying date | -0.37 | 0.15 | 5.80 | 1 | 0.016 | ||
| Face skin yellowness | 0.40 | 0.15 | 6.62 | 1 | 0.010 | ||
| Tarsus skin yellowness | 228.60 | ||||||
| (Intercept) | -1.89 | 5.05 | -0.38 | 0.708 | |||
| Face skin yellowness | 24.05 | 226.60 | |||||
| (Intercept) | -0.21 | 0.13 | 0.101 | ||||
| Sex a | 0.34 | 0.15 | 5.03 | 1 | 0.025 | ||
| Age | -0.26 | 0.08 | 11.56 | 1 | <0.001 | ||
| Laying date | 0.13 | 0.08 | 2.93 | 1 | 0.087 | ||
| Urban gradient | 0.19 | 0.08 | 6.10 | 1 | 0.014 |
a: Sex(male) was the reference category.