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Standardized selection gradients for fecundity selection on morphological traits of male western bluebirds breeding in closed or open habitats (*p<0.05; **p<0.01).
| habitat type | |||
|---|---|---|---|
| trait | open | closed | pooled across habitat |
| tail length | +0.63* | −0.06 | 0.23 |
| tarsus length | +0.54** | −0.30 | 0.09 |
| wing length | −0.32 | −0.44 | −0.27 |
