Table 1.
The results of a logistic regression model of whether or not a female mated during a territorial visit
| Parameter | Coefficient | χ2 | df | P |
|---|---|---|---|---|
| Distance to the lek center (log) | −0.96 | 21.88 | 1 | <0.0001 |
| Female dominance | 1.05 | 12.02 | 1 | 0.0005 |
| Presence of other estrous females | 2.05 | 40.27 | 1 | <0.0001 |
| Visit duration | 0.014 | 27.92 | 1 | <0.0001 |
| Male age | 0.17 | 6.13 | 1 | 0.013 |
| Male shoulder height* | 0.087 | 1.43 | 1 | NS |
| Darkness of male facemask | 0.31 | 1.00 | 1 | NS |
| Male ID | – | 22.99 | 61 | NS |
| Female ID | – | 38.72 | 47 | NS |
Based on 393 visits by 48 females to the territories of 62 males. The final model included only significant terms (χ2 = 141.32, df = 5, P < 0.0001); results relating to other variables were obtained by adding them separately to the final model.
*
, Sample size reduced to 371 because of missing values; the variables in the final model retained their significance in the sample subset. NS, not significant.