Table 2 Colony status, size, and survey precision for updated estimates (N = 398 sites).
From: A global population assessment of the Chinstrap penguin (Pygoscelis antarctica)
Number of sites | % of total | |
|---|---|---|
Location verified by satellite imagery | 364 | 91.5 |
Current colony status | ||
Present | 265 | 66.6 |
Presumed present | 68 | 17.1 |
Absent | 21 | 5.3 |
Presumed absent | 2 | 0.5 |
Unknown | 42 | 10.6 |
Colony size (most recent estimate) | ||
1–10 | 19 | 4.8 |
11–100 | 51 | 12.8 |
101–1000 | 109 | 27.5 |
1001–10,000 | 142 | 35.8 |
10,001–100,000 | 40 | 10.1 |
100,000 + | 6 | 1.5 |
Precision of current estimate (n = 283) | ||
Nest count | ||
N1 (± 5% accuracy) | 114 | 40.3 |
N2 (± 10%) | 20 | 7.1 |
N3 (± 10–15%) | 8 | 2.8 |
N4 (± 25–50%) | 5 | 1.8 |
N5 (nearest order of magnitude) | 119 | 42.0 |
Chick count (C1; ± 5%) | 14 | 4.9 |
Adult count (A4; ± 25–50%) | 3 | 1.1 |
