Select until 8 January
Totals Marly le Roi (78) 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 | 18 | 3 | 0 | 21 | 5.3 | 0 | 18 (2024) | | | | |
| 2. | Greylag Goose | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0.3 | 0 | 1 (2023) | | | | |
| 3. | Mute Swan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 2 | 0.5 | 0 | 1 (2024) | | | | |
| 4. | Shelduck | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 5. | Wigeon | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 6. | Mallard | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 | 0 | 7 | 1.8 | 0 | 5 (2025) | | | | |
| 7. | Pintail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.5 | 0 | 2 (2025) | | | | |
| 8. | Teal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 2 | 0.5 | 0 | 1 (2024) | | | | |
| 9. | Quail | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 6 | 55 | 0 | 69 | 17.3 | 0 | 55 (2025) | | | | |
| 10. | Water Rail | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 13 | 59 | 0 | 78 | 19.5 | 0 | 59 (2025) | | | | |
| 11. | Moorhen | 0 | 0 | 0 | 0 | 0 | 0 | 58 | 149 | 259 | 0 | 466 | 117 | 0 | 259 (2025) | | | | |
| 12. | Coot | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 79 | 123 | 0 | 211 | 53 | 0 | 123 (2025) | | | | |
| 13. | Little Grebe | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 10 | 26 | 0 | 44 | 11 | 0 | 26 (2025) | | | | |
| 14. | Stone Curlew | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 | 7 | 0 | 14 | 3.5 | 0 | 7 (2025) | | | | |
| 15. | Oystercatcher | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.3 | 0 | 1 (2024) | | | | |
| 16. | Avocet | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.3 | 0 | 1 (2024) | | | | |
| 17. | Golden Plover | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 19 | 41 | 0 | 78 | 19.5 | 0 | 41 (2025) | | | | |
| 18. | Ringed Plover | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 5 | 0 | 7 | 1.8 | 0 | 5 (2025) | | | | |
| 19. | Little Ringed Plover | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 3 | 0.8 | 0 | 2 (2025) | | | | |
| 20. | Lapwing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 6 | 1.5 | 0 | 5 (2025) | | | | |
| 21. | Whimbrel | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 13 | 0 | 22 | 5.5 | 0 | 13 (2025) | | | | |
| 22. | Curlew | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 0 | 8 | 2 | 0 | 4 (2024) | | | | |
| 23. | Woodcock | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0.3 | 0 | 1 (2023) | | | | |
| 24. | Snipe | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 25. | Common Sandpiper | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 26 | 20 | 0 | 54 | 13.5 | 0 | 26 (2024) | | | | |
| 26. | Green Sandpiper | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 14 | 15 | 0 | 39 | 9.8 | 0 | 15 (2025) | | | | |
| 27. | Wood Sandpiper | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 3 | 0.8 | 0 | 2 (2024) | | | | |
| 28. | Redshank | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 4 | 1 | 0 | 3 (2025) | | | | |
| 29. | Greenshank | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 4 | 0 | 6 | 1.5 | 0 | 4 (2025) | | | | |
| 30. | Dunlin | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 31. | Common Tern | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0.3 | 0 | 1 (2023) | | | | |
| 32. | Black-headed Gull | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 10 | 0 | 14 | 3.5 | 0 | 10 (2025) | | | | |
| 33. | Mediterranean Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 0 | 5 | 1.3 | 0 | 3 (2024) | | | | |
| 34. | Common Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 35. | Yellow-legged Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 36. | Bittern | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 | 0 | 5 | 1.3 | 0 | 2 (2024) | | | | |
| 37. | Little Bittern | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 | 0 | 8 | 2 | 0 | 6 (2025) | | | | |
| 38. | Night Heron | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 5 | 7 | 0 | 15 | 3.8 | 0 | 7 (2025) | | | | |
| 39. | Grey Heron | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 58 | 64 | 0 | 133 | 33 | 0 | 64 (2025) | | | | |
| 40. | Barn Owl | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0.3 | 1 | 1 (2023) | | | | |
| 41. | Tawny Owl | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0.3 | 0 | 1 (2023) | | | | |
| 42. | Crested Tit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 43. | Skylark | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 13 | 24 | 0 | 43 | 10.8 | 0 | 24 (2025) | | | | |
| 44. | Chiffchaff | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 3 | 0.8 | 0 | 3 (2025) | | | | |
| 45. | Goldcrest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 3 | 0.8 | 0 | 3 (2025) | | | | |
| 46. | Song Thrush | 0 | 0 | 0 | 0 | 0 | 0 | 1582 | 139 | 3002 | 5 | 4728 | 1182 | 0 | 3002 (2025) | | | | |
| 47. | Redwing | 0 | 0 | 0 | 0 | 0 | 0 | 1616 | 298 | 2859 | 13 | 4786 | 1197 | 0 | 2859 (2025) | | | | |
| 48. | Blackbird | 0 | 0 | 0 | 0 | 0 | 0 | 68 | 39 | 32 | 0 | 139 | 35 | 0 | 68 (2023) | | | | |
| 49. | Fieldfare | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 | 0 | 5 | 1.3 | 0 | 3 (2025) | | | | |
| 50. | Ring Ouzel | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 2 | 0.5 | 0 | 1 (2024) | | | | |
| | Species | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Totals | Average | Present | Year Maximum | |
| 51. | Spotted Flycatcher | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 5 | 6 | 0 | 26 | 6.5 | 0 | 15 (2023) | | | | |
| 52. | Robin | 0 | 0 | 0 | 0 | 0 | 0 | 46 | 24 | 60 | 0 | 130 | 33 | 0 | 60 (2025) | | | | |
| 53. | Pied Flycatcher | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 0 | 0 | 5 | 1.3 | 0 | 4 (2023) | | | | |
| 54. | Black Redstart | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 | 0 | 5 | 1.3 | 0 | 2 (2024) | | | | |
| 55. | Redstart | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 56. | Blue-headed Wagtail | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 2 | 0.5 | 0 | 1 (2023) | | | | |
| 57. | Meadow Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 58. | Tree Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 33 | 10 | 0 | 52 | 13 | 0 | 33 (2024) | | | | |
| 59. | Water Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.3 | 0 | 1 (2024) | | | | |
| 60. | Chaffinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 61. | Brambling | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0.5 | 0 | 2 (2025) | | | | |
| 62. | Hawfinch | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 2 | 0 | 9 | 2.3 | 0 | 6 (2024) | | | | |
| 63. | Greenfinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.3 | 0 | 1 (2025) | | | | |
| 64. | Ortolan Bunting | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | 5 | 1.3 | 0 | 4 (2025) | | | | |
| | Species | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Totals | Average | Present | Year Maximum | |
| |
Totals |
0 | 0 | 0 | 0 | 0 | 0 | 3508 | 994 | 6770 | 18 | 11290 | 2823 | 1 | | |
| |
Observation hours |
| | | | | | 1,532:45 | 3,591:20 | 3,723:32 | 114:04 | 8,961:41 | 2,240:25 | | | |