Table 1.
Mean ± 1 SD parameters of breeding yellow-eyed penguins at Port Pegasus (n = 7), Paterson Inlet (n = 6), and Codfish Island (n = 6) during the 2020/21 season.
| Foraging Parameters | Port Pegasus | Paterson Inlet | Codfish Island |
|---|---|---|---|
| n | 7 | 6 | 6 |
| Total trips | 33 | 29 | 27 |
| Sex ratio (M:F) | (4:3) | (2:4) | (3:3) |
| Body mass (kg) | 5.6 ± 0.8 | 5.2 ± 0.5 | 5.4 ± 0.4 |
| Maximum depth (m) | 113.9 | 44.6 | 77.8 |
| Half day trips | 28 (81.8%) | 22 (75.9%) | 1 (3.7%) |
| Mean trip duration (h) | 7.8 ± 2.9 | 8.3 ± 3.1 | 13.9 ± 2.2 |
| Foraging radii (km) | 4.8 ± 2.1 | 9.9 ± 3.7 | 22.6 ± 8.1 |
| Trip length (km) | 13.1 ± 4.9 | 19.2 ± 11.6 | 49.5 ± 24.7 |
| % Benthic dives | 65.6 ± 0.1 | 62.8 ± 0.2 | 64.1 ± 0.2 |
| Dive frequency (dive/h) | 17.9 ± 3.5 | 34.0 ± 6.5 | 25.4 ± 3.8 |
| Dive duration (s) | 128.4 ± 7.2 | 72.9 ± 21.5 | 116.6 ± 17.5 |
| Bottom time (s) | 62.5 ± 4.9 | 43.9 ± 12.6 | 62.6 ± 15.6 |
| Mean depth (m) | 53.1 ± 4.3 | 11.6 ± 6.5 | 37.4 ± 7.5 |
| Diving Efficiency | 0.34 ± 0.1 | 0.46 ± 0.1 | 0.40 ± 0.1 |
| Foraging Effort | 0.73 ± 0.1 | 0.76 ± 0.1 | 0.78 ± 0.1 |