Species: Greater Scaup (Aythya marila)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2024 | 1 | 3 | 3 | 3 |
| 2023 | 1 | 1 | 1 | 1 |
| 2021 | 1 | 1 | 1 | 1 |
| 2019 | 1 | 1 | 1 | 1 |
| 2018 | 1 | 1 | 1 | 1 |
| 2015 | 1 | 1 | 1 | 1 |
| 2014 | 1 | 1 | 1 | 1 |
| 2008 | 1 | 1 | 1 | 1 |
| 2005 | 1 | 1 | 1 | 1 |
| 1994 | 1 | 1 | 1 | 1 |
| 1992 | 1 | 2 | 2 | 2 |
| Totalt alle år | 1 | 14 | 14 | 14 |