Select until 14 January
Totals Westplaat (Maasvlakte, Slufter) 2017 - 2026
| | Species | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Totals | Average | Newly ringed | Retraps | Year Maximum | |
| 1. | Water Rail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 2. | Ringed Plover | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 5 | 2.5 | 5 | 0 | 5 (2025) | | | | |
| 3. | Jack Snipe | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 1 | 12 | 6 | 12 | 0 | 11 (2025) | | | | |
| 4. | Woodcock | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 2 | 11 | 5.5 | 11 | 0 | 9 (2025) | | | | |
| 5. | Snipe | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 6. | Redshank | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 7. | Sanderling | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 8. | Long-eared Owl | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 9. | Kingfisher | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 10. | Coal Tit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 4 | 2 | 4 | 0 | 4 (2025) | | | | |
| 11. | Blue Tit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 203 | 0 | 203 | 102 | 192 | 11 | 203 (2025) | | | | |
| 12. | Great Tit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 47 | 0 | 47 | 23.5 | 45 | 2 | 47 (2025) | | | | |
| 13. | Wood Lark | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.5 | 1 | 0 | 1 (2026) | | | | |
| 14. | Skylark | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 6 | 3 | 6 | 0 | 5 (2026) | | | | |
| 15. | Shore Lark | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 4 | 12 | 6 | 9 | 3 | 8 (2025) | | | | |
| 16. | Cetti's Warbler | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 0 | 22 | 11 | 21 | 1 | 22 (2025) | | | | |
| 17. | Long-tailed Tit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 46 | 0 | 46 | 23 | 45 | 1 | 46 (2025) | | | | |
| 18. | Yellow-browed Warbler | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 19. | Chiffchaff | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 57 | 0 | 57 | 28.5 | 57 | 0 | 57 (2025) | | | | |
| 20. | Sedge Warbler | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 1 | 2 | 0 | 2 (2025) | | | | |
| 21. | Reed Warbler | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 13 | 6.5 | 11 | 2 | 13 (2025) | | | | |
| 22. | Savi's Warbler | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 1 | 2 | 0 | 2 (2025) | | | | |
| 23. | Blackcap | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 369 | 0 | 369 | 185 | 365 | 4 | 369 (2025) | | | | |
| 24. | Garden Warbler | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0 | 20 | 10 | 19 | 1 | 20 (2025) | | | | |
| 25. | Whitethroat | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 26. | Firecrest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 0 | 14 | 7 | 14 | 0 | 14 (2025) | | | | |
| 27. | Goldcrest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 70 | 0 | 70 | 35 | 70 | 0 | 70 (2025) | | | | |
| 28. | Wren | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0 | 20 | 10 | 15 | 5 | 20 (2025) | | | | |
| 29. | Short-toed Tree Creeper | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 30. | Starling | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 11 | 5.5 | 11 | 0 | 11 (2025) | | | | |
| 31. | Song Thrush | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | 0 | 23 | 11.5 | 23 | 0 | 23 (2025) | | | | |
| 32. | Redwing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 8 | 4 | 8 | 0 | 8 (2025) | | | | |
| 33. | Blackbird | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 36 | 0 | 36 | 18 | 36 | 0 | 36 (2025) | | | | |
| 34. | Fieldfare | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 1 | 2 | 0 | 2 (2025) | | | | |
| 35. | Robin | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 101 | 0 | 101 | 51 | 96 | 5 | 101 (2025) | | | | |
| 36. | Stonechat | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 3 | 1.5 | 3 | 0 | 3 (2025) | | | | |
| 37. | Dunnock | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 28 | 0 | 28 | 14 | 25 | 3 | 28 (2025) | | | | |
| 38. | Meadow Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 3 | 1.5 | 3 | 0 | 2 (2025) | | | | |
| 39. | Rock Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 40. | Chaffinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 0 | 18 | 9 | 18 | 0 | 18 (2025) | | | | |
| 41. | Brambling | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 1 | 2 | 0 | 2 (2025) | | | | |
| 42. | Bullfinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | 9 | 4.5 | 7 | 2 | 9 (2025) | | | | |
| 43. | Greenfinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 1 | 2 | 0 | 2 (2025) | | | | |
| 44. | Redpoll | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 45. | Siskin | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (2025) | | | | |
| 46. | Reed Bunting | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.5 | 1 | 0 | 1 (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 | 1181 | 14 | 1195 | 598 | 1155 | 40 | | |
| |
Observation hours |
| | | | | | | | 87:45 | 4:00 | 91:45 | 45:53 | | | | |