Table 1.
Factors explaining variation in cuckoo parasitism rates among passerine species in Europe.
| Estimate | SE | p | |
|---|---|---|---|
| Intercept | −16.416 | 4.428 | 0.000 |
| log(nest.depth + 1) | −0.206 | 0.954 | 0.829 |
| Crevice vs. Cavity | 7.047 | 1.230 | 0.000 |
| Dome vs. Cavity | 6.405 | 1.329 | 0.000 |
| Open vs. Cavity | 6.517 | 1.174 | 0.000 |
| log(Nest height + 1) | 0.001 | 0.095 | 0.988 |
| Grassland vs. Forest | 1.003 | 0.604 | 0.097 |
| Rocky areas vs. Forest | 0.380 | 0.980 | 0.698 |
| Shrubland vs. Forest | 1.757 | 0.462 | 0.000 |
| Wetlands vs. Forest | 0.158 | 0.660 | 0.811 |
| Plant material vs. Invertebrates | −2.694 | 0.678 | 0.000 |
| log(Female body size) | 3.556 | 2.360 | 0.132 |
| log(Female body size2) | −0.689 | 0.347 | 0.047 |
| Breeding overlap | 0.001 | 0.013 | 0.901 |
Parameter estimates are from a binomial regression model of population-specific parasitism rates with species identity included as random factor. Estimates in bold have p-values below 0.05 and are considered significant. See Materials and Methods for details regarding each factor.