Select until 3 March
Totals Heverlee (nacht) 2017 - 2026
| | Species | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Totals | Average | Present | Year Maximum | |
| 1. | Canada Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | 3 | 26 | 8.7 | 0 | 23 (2025) | | | | |
| 2. | Bar-headed Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 3. | Greylag Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 0.7 | 0 | 1 (2025) | | | | |
| 4. | Eurasian White-fronted Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 4 | 1 | 15 | 5 | 0 | 10 (2024) | | | | |
| 5. | Egyptian Goose | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 6. | Gadwall | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 5 | 1.7 | 0 | 5 (2025) | | | | |
| 7. | Mallard | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 4 | 22 | 7.3 | 0 | 18 (2025) | | | | |
| 8. | Teal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 4 | 1.3 | 0 | 4 (2025) | | | | |
| 9. | Quail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 27 | 0 | 27 | 9 | 0 | 27 (2025) | | | | |
| 10. | Water Rail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 72 | 6 | 78 | 26 | 0 | 72 (2025) | | | | |
| 11. | Moorhen | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 182 | 8 | 190 | 63 | 0 | 182 (2025) | | | | |
| 12. | Coot | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 91 | 8 | 99 | 33 | 0 | 91 (2025) | | | | |
| 13. | Crane | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 0.7 | 0 | 1 (2025) | | | | |
| 14. | Little Grebe | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | 9 | 3 | 0 | 9 (2025) | | | | |
| 15. | Stone Curlew | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 16. | Oystercatcher | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 11 | 3.7 | 0 | 11 (2025) | | | | |
| 17. | Golden Plover | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 | 7 | 2.3 | 0 | 4 (2026) | | | | |
| 18. | Ringed Plover | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 19. | Little Ringed Plover | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 0 | 15 | 5 | 0 | 15 (2025) | | | | |
| 20. | Lapwing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.7 | 0 | 2 (2025) | | | | |
| 21. | Whimbrel | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 22. | Curlew | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.7 | 0 | 2 (2025) | | | | |
| 23. | Common Sandpiper | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 34 | 0 | 34 | 11.3 | 0 | 34 (2025) | | | | |
| 24. | Green Sandpiper | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 0 | 16 | 5.3 | 0 | 16 (2025) | | | | |
| 25. | Redshank | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 4 | 1.3 | 0 | 4 (2025) | | | | |
| 26. | Greenshank | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 10 | 3.3 | 0 | 10 (2025) | | | | |
| 27. | Black-headed Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 6 | 2 | 0 | 6 (2025) | | | | |
| 28. | Bittern | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 29. | Night Heron | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 30. | Grey Heron | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 65 | 10 | 76 | 25.3 | 0 | 65 (2025) | | | | |
| 31. | Barn Owl | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 2 | 26 | 8.7 | 0 | 24 (2025) | | | | |
| 32. | Tawny Owl | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | | | | | |
| 33. | Magpie | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | | | | |
| 34. | Jackdaw | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 35. | Rook | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 4 | 1.3 | 0 | 4 (2025) | | | | |
| 36. | Carrion Crow | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.7 | 0 | 2 (2025) | | | | |
| 37. | Skylark | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 2 | 17 | 5.7 | 0 | 15 (2025) | | | | |
| 38. | Blackcap | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.7 | 0 | 2 (2025) | | | | |
| 39. | Regulus sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 40. | Song Thrush | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 107 | 3693 | 184 | 3984 | 1328 | 0 | 3693 (2025) | | | | |
| 41. | Redwing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1158 | 6284 | 136 | 7578 | 2526 | 0 | 6284 (2025) | | | | |
| 42. | Blackbird | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 354 | 14 | 390 | 130 | 0 | 354 (2025) | | | | |
| 43. | Spotted Flycatcher | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 11 | 3.7 | 0 | 11 (2025) | | | | |
| 44. | flycatcher sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.7 | 0 | 2 (2025) | | | | |
| 45. | Robin | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 1086 | 2 | 1099 | 366 | 1 | 1086 (2025) | | | | |
| 46. | Black Redstart | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 47. | Tree Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.7 | 0 | 2 (2025) | | | | |
| 48. | Ortolan Bunting | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 49. | Species unidentified | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 98 | 0 | 98 | 32.7 | 0 | 98 (2025) | | | | |
| 50. | passerine sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| | Species | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Totals | Average | Present | Year Maximum | |
| |
Totals |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 1309 | 12194 | 386 | 13889 | 4630 | 2 | | |
| |
Observation hours |
| | | | | | | 332:35 | 2,236:22 | 440:30 | 3,009:27 | 1,003:09 | | | |