Select until 25 March
Totals Beijum, Groningen 2017 - 2026
| | Species | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Totals | Average | Newly
ringed | Retraps | Year
Maximum | |
| 1. | Oystercatcher | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 1.5 | 3 | 0 | 3 (2026) | | | | |
| 2. | Black-headed Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 22 | 11 | 20 | 2 | 22 (2026) | | | | |
| 3. | Common Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 2 | 4 | 0 | 4 (2026) | | | | |
| 4. | Caspian Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.5 | 1 | 0 | 1 (2026) | | | | |
| 5. | Herring Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 21 | 10.5 | 21 | 0 | 21 (2026) | | | | |
| 6. | Yellow-legged Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.5 | 1 | 0 | 1 (2026) | | | | |
| 7. | Starling | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 47 | 1 | 48 | 24 | 48 | 0 | 47 (2025) | | | | |
| 8. | House Sparrow | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 1 | 21 | 10.5 | 19 | 2 | 20 (2025) | | | | |
| | Species | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Totals | Average | Newly
ringed | Retraps | Year
Maximum | |
| |
Totals |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 67 | 54 | 121 | 61 | 117 | 4 | | |
| |
Observation hours |
| | | | | | | | 51:45 | 5:45 | 57:30 | 28:45 | | | | |
