Table 3.
Statistical analysis of three lifetime parameters of male recruits descending from monogamous, primary and secondary broods. Differences between these brood categories were controlled for differences between year of birth as well as laying date of the descending brood (GLM-model with Poisson errors and log-link function: dependent variable=year+laying date+brood category+error).
| number of polygynous broods | number of fledglings | age | |||||
|---|---|---|---|---|---|---|---|
| d.f. | χ2 | p | F | p | χ2 | p | |
| year | 25 | 41.3 | 0.021 | 0.79 | 0.75 | 25.4 | 0.43 |
| laying date | 1 | < 0.01 | 0.98 | 0.07 | 0.79 | < 0.01 | 0.99 |
| brood category | 2 | 6.16 | 0.046 | 2.73 | 0.067 | 1.47 | 0.48 |
| residual | 203 | ||||||