Table 2 GLMMs used to determine the factors that affected whether European Kestrel occupied or did not occupy the boxes (Final model \(R_{m}^{2}\) = 0.183, \(R_{c}^{2}\) = 0.554, n = 540)
Factors | df | Estimate | χ2 | SE | p |
|---|---|---|---|---|---|
Intercept | 1 | − 8.6565 | 16.0292 | 2.162 | 0.000 |
 With/without nest material | 1 | 1.736 | 17.691 | 0.394 | 0.000 |
 Entrance size | 1 | 0.394 | 20.192 | 0.162 | 0.015 |
Rejected term | |||||
 Entrance size × entrance orientation | 1 | 0.094 | 0.371 | 0.156 | 0.542 |
 Nest box height from ground | 1 | − 0.007 | 0.038 | 0.035 | 0.845 |
 Entrance orientation | 1 | 0.190 | 0.372 | 0.312 | 0.549 |
 Absolute age of box | 1 | − 0.200 | 3.4442 | 0.108 | 0.064 |