Table 1 Effects of male composite cognitive score, male plumage morph, and male body condition index (BCI) on number of nestlings sired and number of extrapair nestlings.
Response variable | Data Set | Explanatory variables | Estimate (mean ± SE) | Z value | p-value |
|---|---|---|---|---|---|
Number of nestlings sired | All males (N = 30) | Intercept | 0.559 ± 0.912 | 0.613 | 0.540 |
Composite cognitive score | 0.099 ± 0.032 | 3.102 | 0.002 | ||
Male plumage morph (OP) | 0.382 ± 0.422 | 0.905 | 0.365 | ||
Male plumage morph (WT) | 0.347 ± 0.371 | 0.936 | 0.349 | ||
BCI | − 0.005 ± 0.006 | − 0.820 | 0.412 | ||
Number of extrapair nestlings | Paired males (N = 15) | Intercept | − 1.065 ± 1.146 | − 0.929 | 0.353 |
Composite cognitive score | 0.141 ± 0.051 | 2.761 | 0.006 | ||
Male plumage morph (OP) | 0.384 ± 0.679 | − 0.567 | 0.571 | ||
Male plumage morph (WT) | 1.007 ± 0.563 | 1.787 | 0.074 | ||
BCI | 4.742 × 10–3 ± 0.006 | 0.074 | 0.941 |
