Mew Gull Larus canus canus; heinei; kamtschatschensis; brachyrhynchus
(last update: March 12, 2012)
Table 1: number of mirrors on the outer primaries.
From: Is it possible to age subadult Mew Gulls Larus canus?
by: Kenneth Bengtsson & Lennarth Blomquist, publication in: Anser 2-42(2003): p 73-92.
| Age: | N: | 0 | 1 | 2 | 3 |
| 1 | 374 | 361 | 13 | 0 | 0 |
| 2 | 151 | 0 | 22 | 129 | 0 |
| 3 | 24 | - | - | 23 | 1 |
| 4 | 15 | - | - | 12 | 3 |
| 5 | 12 | - | - | 7 | 5 |
| 6 | 10 | - | - | 10 | - |
7 |
7 | - | - | 3 | 4 |
| 8-12 | 19 | - | - | 16 | 3 |
| 3-12 | 87 | - | - | 82% | 18% |
| adult reference group | 100 | - | - | 80% | 20% |