Also present
Savigny-sur-Orge, Essonne (nuit)
Totals 2025 - individuals
| Species | Apr | May | Totals | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Mallard | 4 | 1 | 5 | 2 (18 Apr) | 15 | 4 | 18 Apr | 19 May | ||||
| 2. | Quail | 1 | 10 | 11 | 3 (10 May) | 26 | 7 | 29 Apr | 26 May | ||||
| 3. | Swift | 0 | 23 | 23 | 6 (12 May) | 26 | 7 | 9 May | 19 May | ||||
| 4. | Water Rail | 3 | 3 | 6 | 2 (24 Apr) | 19 | 5 | 16 Apr | 26 May | ||||
| 5. | Moorhen | 46 | 38 | 84 | 7 (16 Apr) | 85 | 23 | 16 Apr | 26 May | ||||
| 6. | Coot | 24 | 20 | 44 | 4 (22 Apr) | 85 | 23 | 16 Apr | 26 May | ||||
| 7. | Little Grebe | 3 | 9 | 12 | 5 (14 May) | 26 | 7 | 22 Apr | 14 May | ||||
| 8. | Stone Curlew | 2 | 0 | 2 | 1 (18 Apr) | 7 | 2 | 18 Apr | 22 Apr | ||||
| 9. | Little Ringed Plover | 1 | 1 | 2 | 1 (25 Apr) | 7 | 2 | 25 Apr | 1 May | ||||
| 10. | Whimbrel | 0 | 3 | 3 | 2 (12 May) | 7 | 2 | 12 May | 13 May | ||||
| 11. | Common Sandpiper | 18 | 24 | 42 | 6 (27 Apr) | 63 | 17 | 22 Apr | 26 May | ||||
| 12. | Green Sandpiper | 1 | 0 | 1 | 1 (27 Apr) | 4 | 1 | 27 Apr | 27 Apr | ||||
| 13. | Greenshank | 1 | 0 | 1 | 1 (22 Apr) | 4 | 1 | 22 Apr | 22 Apr | ||||
| 14. | Common Tern | 0 | 1 | 1 | 1 ( 3 May) | 4 | 1 | 3 May | 3 May | ||||
| 15. | Black-headed Gull | 3 | 2 | 5 | 3 (17 Apr) | 11 | 3 | 17 Apr | 26 May | ||||
| 16. | Mediterranean Gull | 3 | 0 | 3 | 2 (25 Apr) | 7 | 2 | 22 Apr | 25 Apr | ||||
| 17. | Little Bittern | 0 | 2 | 2 | 1 (14 May) | 7 | 2 | 14 May | 18 May | ||||
| 18. | Night Heron | 0 | 3 | 3 | 1 ( 2 May) | 11 | 3 | 2 May | 18 May | ||||
| 19. | Grey Heron | 3 | 7 | 10 | 1 (22 Apr) | 37 | 10 | 22 Apr | 24 May | ||||
| 20. | Barn Owl | 0 | 1 | 1 | 1 (25 May) | 4 | 1 | 25 May | 25 May | ||||
| 21. | Golden Oriole | 1 | 0 | 1 | 1 (28 Apr) | 4 | 1 | 28 Apr | 28 Apr | ||||
| 22. | Carrion Crow | 1 | 0 | 1 | 1 (28 Apr) | 4 | 1 | 28 Apr | 28 Apr | ||||
| 23. | Skylark | 1 | 0 | 1 | 1 (30 Apr) | 4 | 1 | 30 Apr | 30 Apr | ||||
| 24. | Song Thrush | 26 | 2 | 28 | 10 (24 Apr) | 30 | 8 | 16 Apr | 11 May | ||||
| 25. | Ring Ouzel | 4 | 0 | 4 | 2 (17 Apr) | 11 | 3 | 17 Apr | 30 Apr | ||||
| 26. | Spotted Flycatcher | 2 | 22 | 24 | 6 (14 May) | 41 | 11 | 29 Apr | 26 May | ||||
| 27. | Black Redstart | 0 | 1 | 1 | 1 ( 3 May) | 4 | 1 | 3 May | 3 May | ||||
| 28. | Tree Pipit | 8 | 5 | 13 | 1 (16 Apr) | 48 | 13 | 16 Apr | 13 May | ||||
| 29. | Hawfinch | 0 | 1 | 1 | 1 ( 1 May) | 4 | 1 | 1 May | 1 May | ||||
| 30. | Ortolan Bunting | 0 | 1 | 1 | 1 ( 2 May) | 4 | 1 | 2 May | 2 May | ||||
| Species | Apr | May | Totals | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 156 | 180 | 336 | 336 | 1655 | 100 | 27 | ||||||
| Observation hours | 112:39 | 106:24 | 219:03 | ||||||||||
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