Table 1.
Best performance for each bird on inclined substrates. Italic entries indicate successful ascents. Comparable behavioural data for Chukar available in Dial et al. [17].
| bird | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|
| mass (g) | 163 | 233 | 271 | 361 | 374 | 426 | 585 | 856 | 1861 |
| age (dph) | 2 | 43 | 56 | 82 | 84 | 99 | 138 | 180 | adult |
| category | hatchling | young | young | juvenile | juvenile | juvenile | sub-adult | sub-adult | adult |
| ramp angle | |||||||||
| 50 | walk/run | walk/run | walk/run | walk/run | walk/run | WAIR | WAIR | slip | slip |
| 60 | WAIR | WAIR | WAIR | WAIR | WAIR | WAIR | slip | slip | slip |
| 70 | WAIR | WAIR | WAIR | WAIR | WAIR | WAIR | slip | treadmill | treadmill |
| 80 | WAIR | WAIR | WAIR | WAIR | WAIR | WAIR | treadmill | treadmill | treadmill |
| 90 | WAIR | WAIR | WAIR | WAIR | WAIR | WAIR | treadmill | fail | fail |
| 100 | WAIR | slip | fail | fail | fail | fail | fail | fail | fail |
| 110 | WAIR | fail | fail | fail | fail | fail | fail | fail | fail |