Table 2.
Fixed effects | a) Resource preference | a) Home range size | c) Activity | ||||||
---|---|---|---|---|---|---|---|---|---|
β (SE) | FNUMdf, DENdf | P | β (SE) | FNUMdf, DENdf | P | β (SE) | FNUMdf, DENdf | P | |
Intercept | −0.52 (0.23) | 0.0308 | −0.73 (0.25) | 0.0053 | 1.31 (0.23) | <0.0001 | |||
Sex | −0.28 (0.33) | 2.651,58.2 | 0.11 | 0.25 (0.36) | 0.951,55.7 | 0.33 | −0.96 (0.33) | 4.941,51.9 | 0.0306 |
Age | −0.27 (0.09) | 9.331,32 | 0.0045 | 0.05 (0.10) | 0.271,32.8 | 0.61 | 0.10 (0.09) | 1.171,31.5 | 0.29 |
Territorial status | −0.80(0.33) | 0.021,51.4 | 0.88 | 2.21 (0.35) | 46.671,49.6 | <0.0001 | −0.06 (0.33) | 0.401,46.4 | 0.53 |
Dominance rank | −0.68 (0.31) | 0.191, 52.8 | 0.67 | −0.03 (0.33) | 0.041,50.8 | 0.84 | 0.47 (0.33) | 4.221,47.5 | 0.0456 |
Month | 0.08 (0.03) | 6.291, 393 | 0.0125 | −0.12 (0.03) | 12.671,392 | 0.0004 | 0.12 (0.03) | 14.801, 391 | 0.0001 |
Sex*dominance rank | 1.53 (0.37) | 17.481, 53.9 | 0.0001 | 0.01 (0.34) | 0.001, 51.8 | 0.95 | −0.15 (0.37) | 0.171, 48.4 | 0.68 |
Sex*territorial status | 15.551, 53.9 | 0.0002 | 7.081, 51.7 | 0.0103 | 0.841, 48.4 | 0.36 | |||
Month² | 0.17 (0.11) | 15.341, 389 | 0.0001 | 0.23 (0.11) | 1.691, 389 | 0.19 | −1.02 (0.10) | 126.71, 388 | <0.0001 |
Month²* sex*dominance rank | 6.802, 387 | 0.0012 | 4.152, 387 | 0.0165 | 4.282, 386 | 0.0145 | |||
Month²* sex*territorial status | 8.383, 387 | <0.0001 | 25.143, 387 | <0.0001 | 3.193, 386 | 0.0236 | |||
Random effects | σ² (SE) | Z | P | σ² (SE) | Z | P | σ² (SE) | Z | P |
Individual | 0.18 (0.06) | 3.20 | 0.0007 | 0.22 (0.07) | 3.35 | 0.0004 | 0.21 (0.06) | 3.33 | 0.0004 |
Residual | 0.46 (0.03) | 13.81 | <0.0001 | 0.47 (0.03) | 13.82 | <0.0001 | 0.40 (0.03) | 13.79 | <0.0001 |
Adjusted repeatability | R | χ² | P | R | χ² | P | R | χ² | P |
0.28 | 64.7 | <0.0001 | 0.32 | 82.3 | <0.0001 | 0.34 | 85.8 | <0.0001 | |
Null-model | σ² (SE) | Z | P | σ² (SE) | Z | P | σ² (SE) | Z | P |
Individual | 0.47 (0.11) | 4.23 | <0.0001 | 0.43 (0.10) | 4.18 | <0.0001 | 0.18 (0.06) | 3.20 | 0.0007 |
Residual | 0.53 (0.04) | 14.86 | <0.0001 | 0.56 (0.04) | 14.87 | <0.0001 | 0.83 (0.06) | 14.85 | <0.0001 |
Non-adjusted repeatability | R | χ² | P | R | χ² | P | R | χ² | P |
0.47 | 209.1 | <0.0001 | 0.43 | 184.8 | <0.0001 | 0.18 | 39.8 | <0.0001 |
All transformed response variables were scaled and centred. Repeatability (R) was calculated as the among-individual variance divided by the sum of the among-individual and the residual (within-individual) variance, and its significance tested by comparing models with and without the random effect of bird ID using a likelihood ratio test.