Subspecies: Nordlig storskarv (Phalacrocorax carbo carbo)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2025 | 1 | 5 | 5 | 5 |
| 2024 | 1 | 1 | 1 | 1 |
| 2023 | 1 | 3 | 3 | 3 |
| 2022 | 1 | 2 | 2 | 2 |
| 2021 | 1 | 1 | 1 | 1 |
| 2019 | 1 | 2 | 2 | 2 |
| 2018 | 1 | 2 | 2 | 2 |
| 2017 | 1 | 1 | 1 | 1 |
| 2016 | 1 | 2 | 2 | 2 |
| 2015 | 1 | 1 | 1 | 1 |
| Totalt alle år | 1 | 16 | 16 | 20 |