Select until 24 November
Totals Wellerlooi (nacht) 2016 - 2025
| | Species | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | Totals | Average | Present | Year Maximum | |
| 1. | Dark-bellied Brent Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 3 | 1 | 0 | 3 (2024) | | | | |
| 2. | Canada Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 16 | 6 | 28 | 9.3 | 0 | 16 (2024) | | | | |
| 3. | Barnacle Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 50 | 105 | 204 | 359 | 120 | 0 | 204 (2025) | | | | |
| 4. | Greylag Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 106 | 120 | 246 | 82 | 1 | 120 (2025) | | | | |
| 5. | goose sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.7 | 0 | 2 (2024) | | | | |
| 6. | Tundra Bean Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 48 | 447 | 154 | 649 | 216 | 0 | 447 (2024) | | | | |
| 7. | Eurasian White-fronted Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 517 | 1851 | 2791 | 5159 | 1720 | 0 | 2791 (2025) | | | | |
| 8. | Bewick's Swan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 9. | Ruddy Shelduck | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 4 | 1.3 | 0 | 2 (2025) | | | | |
| 10. | Shoveler | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 4 | 1.3 | 13 | 4 (2024) | | | | |
| 11. | Gadwall | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 68 | 64 | 132 | 44 | 0 | 68 (2024) | | | | |
| 12. | Wigeon | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 64 | 79 | 26.3 | 0 | 64 (2025) | | | | |
| 13. | Mallard | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 20 | 40 | 61 | 20.3 | 10 | 40 (2025) | | | | |
| 14. | Pintail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 5 | 1.7 | 0 | 5 (2025) | | | | |
| 15. | Teal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 18 | 35 | 11.7 | 0 | 18 (2025) | | | | |
| 16. | duck sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 5 | 1.7 | 0 | 4 (2025) | | | | |
| 17. | Quail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 23 | 34 | 11.3 | 6 | 23 (2025) | | | | |
| 18. | Nightjar | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 7 | 10 | 3.3 | 0 | 7 (2025) | | | | |
| 19. | Swift | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 20. | Cuckoo | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 3 | 1 | 0 | 2 (2024) | | | | |
| 21. | Woodpigeon | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 1 | 0 | 3 (2025) | | | | |
| 22. | Water Rail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 111 | 94 | 207 | 69 | 0 | 111 (2024) | | | | |
| 23. | Spotted Crake | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 4 | 1.3 | 0 | 4 (2024) | | | | |
| 24. | Moorhen | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 169 | 224 | 399 | 133 | 1 | 224 (2025) | | | | |
| 25. | Coot | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 105 | 74 | 182 | 61 | 0 | 105 (2024) | | | | |
| 26. | Little Grebe | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 12 | 14 | 27 | 9 | 0 | 14 (2025) | | | | |
| 27. | Oystercatcher | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 31 | 24 | 57 | 19 | 0 | 31 (2024) | | | | |
| 28. | Avocet | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 5 | 14 | 4.7 | 0 | 9 (2024) | | | | |
| 29. | Grey Plover | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 2 | 0.7 | 0 | 1 (2023) | | | | |
| 30. | Golden Plover | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 4 | 7 | 2.3 | 0 | 4 (2025) | | | | |
| 31. | Ringed Plover | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2024) | | | | |
| 32. | Little Ringed Plover | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 16 | 12 | 30 | 10 | 0 | 16 (2024) | | | | |
| 33. | Lapwing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 10 | 16 | 5.3 | 0 | 10 (2025) | | | | |
| 34. | Whimbrel | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 13 | 20 | 6.7 | 0 | 13 (2025) | | | | |
| 35. | Curlew | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 16 | 17 | 35 | 11.7 | 0 | 17 (2025) | | | | |
| 36. | Snipe | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 1 | 5 | 1.7 | 0 | 3 (2023) | | | | |
| 37. | Common Sandpiper | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 21 | 41 | 78 | 26 | 0 | 41 (2025) | | | | |
| 38. | Green Sandpiper | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 5 | 5 | 18 | 6 | 0 | 8 (2023) | | | | |
| 39. | Wood Sandpiper | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 3 | 1 | 0 | 2 (2025) | | | | |
| 40. | Redshank | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 8 | 9 | 3 | 0 | 8 (2025) | | | | |
| 41. | Greenshank | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 1 | 7 | 13 | 4.3 | 0 | 7 (2025) | | | | |
| 42. | Dunlin | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 2 | 0.7 | 0 | 1 (2023) | | | | |
| 43. | Caspian Tern | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.7 | 0 | 2 (2024) | | | | |
| 44. | Common Tern | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 45. | Black-headed Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 17 | 20 | 38 | 12.7 | 0 | 20 (2025) | | | | |
| 46. | Common Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 47. | large gull sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 6 | 2 | 0 | 6 (2025) | | | | |
| 48. | Bittern | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 7 | 8 | 18 | 6 | 0 | 8 (2025) | | | | |
| 49. | Night Heron | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 2 | 6 | 2 | 0 | 4 (2024) | | | | |
| 50. | heron sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2024) | | | | |
| | Species | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | Totals | Average | Present | Year Maximum | |
| 51. | Grey Heron | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 70 | 162 | 168 | 400 | 133 | 0 | 168 (2025) | | | | |
| 52. | Purple Heron | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.3 | 0 | 1 (2023) | | | | |
| 53. | Little Owl | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.3 | 0 | 1 (2023) | | | | |
| 54. | Long-eared Owl | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 3 | 1 | 10 | 1 (2023) | | | | |
| 55. | Magpie | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 56. | Carrion Crow | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 4 | 1.3 | 0 | 2 (2023) | | | | |
| 57. | Wood Lark | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2024) | | | | |
| 58. | Skylark | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 31 | 6 | 45 | 15 | 0 | 31 (2024) | | | | |
| 59. | Chiffchaff | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 60. | Blackcap | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 3 | 1 | 0 | 2 (2025) | | | | |
| 61. | Goldcrest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 2 | 6 | 2 | 0 | 4 (2024) | | | | |
| 62. | Starling | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 4 | 1.3 | 0 | 2 (2024) | | | | |
| 63. | Song Thrush | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2650 | 6959 | 5966 | 15575 | 5192 | 0 | 6959 (2024) | | | | |
| 64. | Redwing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1964 | 7158 | 7276 | 16398 | 5466 | 0 | 7276 (2025) | | | | |
| 65. | Blackbird | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 275 | 417 | 468 | 1160 | 387 | 1 | 468 (2025) | | | | |
| 66. | Fieldfare | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 | 4 | 1.3 | 0 | 2 (2024) | | | | |
| 67. | Ring Ouzel | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 3 | 1 | 0 | 1 (2023) | | | | |
| 68. | thrush sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 0.7 | 0 | 1 (2024) | | | | |
| 69. | Spotted Flycatcher | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 32 | 24 | 69 | 23 | 0 | 32 (2024) | | | | |
| 70. | flycatcher sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 71. | Robin | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 354 | 684 | 491 | 1529 | 510 | 6 | 684 (2024) | | | | |
| 72. | Pied Flycatcher | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 4 | 1.3 | 0 | 2 (2023) | | | | |
| 73. | Black Redstart | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 9 | 3 | 0 | 7 (2025) | | | | |
| 74. | Redstart | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2024) | | | | |
| 75. | House Sparrow | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 76. | Dunnock | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 3 | 1 | 0 | 2 (2023) | | | | |
| 77. | Blue-headed Wagtail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 5 | 1.7 | 0 | 4 (2024) | | | | |
| 78. | Yellow wagtail sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 79. | White Wagtail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 2 | 0.7 | 0 | 1 (2023) | | | | |
| 80. | Meadow Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.3 | 0 | 1 (2023) | | | | |
| 81. | Tree Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | 40 | 57 | 120 | 40 | 0 | 57 (2025) | | | | |
| 82. | Chaffinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 1.3 | 0 | 4 (2025) | | | | |
| 83. | Brambling | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 | 0 | 8 | 2.7 | 0 | 6 (2024) | | | | |
| 84. | Bullfinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 85. | Greenfinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 86. | Ortolan Bunting | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 4 | 7 | 2.3 | 0 | 4 (2025) | | | | |
| 87. | Reed Bunting | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 4 | 1.3 | 0 | 2 (2025) | | | | |
| 88. | Species unidentified | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 102 | 172 | 284 | 95 | 0 | 172 (2025) | | | | |
| | Species | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | Totals | Average | Present | Year Maximum | |
| |
Totals |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 6089 | 18837 | 18766 | 43692 | 14564 | 48 | | |
| |
Observation hours |
| | | | | | | 1,047:36 | 2,281:38 | 2,221:15 | 5,550:29 | 1,850:10 | | | |