Table 6. Model selection table for variables explaining failed provisioning attempts in response to short-term traffic noise playback for all Western Bluebirds in the study.
| Model | K | AICc | ΔAICc | Weight |
|---|---|---|---|---|
| Brood size (+), parent sex (−), treatment (+) | 6 | 107.52 | 0.00 | 0.14 |
| Parent sex (−), treatment (+) | 5 | 107.72 | 0.20 | 0.13 |
| Parent sex (−), treatment (+), trial (−) | 6 | 107.84 | 0.32 | 0.12 |
| Brood size (+), parent sex (−), treatment (+), trial (−) | 7 | 108.07 | 0.55 | 0.11 |
| Brood size (+), parent sex (−), treatment (+), trial (−), treatment*trial (+) | 8 | 108.48 | 0.96 | 0.09 |
| Parent sex (−), treatment (+), trial (−), treatment*trial (+) | 7 | 108.67 | 1.15 | 0.08 |
| Parent sex (−), time within 10 m (+), treatment (+) | 6 | 108.70 | 1.18 | 0.08 |
| Parent sex (−), time within 10 m (+), treatment (+), trial (−) | 7 | 108.93 | 1.41 | 0.07 |
| Parent sex (−), ordinal date (−), treatment (+) | 6 | 109.05 | 1.53 | 0.07 |
| Parent sex (−), ordinal date (−), treatment (+), trial (−) | 7 | 109.24 | 1.72 | 0.06 |
| Brood size (+), parent sex (−), time within 10 m (+), treatment (+) | 7 | 109.35 | 1.83 | 0.06 |
| null | 3 | 117.61 | 10.09 | 0.00 |
Note:
Time within 10 m and ordinal date were centered and scaled. +/− shows the direction of the trends. Bolded values show parameters with 95% CIs that do not overlap zero.