Totals Viersels Gebroekt 2020
| Year | |
| Period | |
| count-field | |
| Also present | |
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Shelduck | 4 | 0 | 4 | 0 | 4 | 4 (4 Apr) | 14 | 1 | 4 Apr | 4 Apr | ||||
| 2. | Swift | 21 | 11 | 32 | 0 | 32 | 14 (25 Apr) | 57 | 4 | 19 Apr | 9 May | ||||
| 3. | Collared Dove | 0 | 1 | 1 | 0 | 1 | 1 (9 May) | 14 | 1 | 9 May | 9 May | ||||
| 4. | Little Ringed Plover | 3 | 0 | 3 | 0 | 3 | 2 (4 Apr) | 29 | 2 | 4 Apr | 19 Apr | ||||
| 5. | Whimbrel | 20 | 0 | 20 | 0 | 20 | 19 (25 Apr) | 29 | 2 | 19 Apr | 25 Apr | ||||
| 6. | Curlew | 2 | 0 | 2 | 0 | 2 | 2 (25 Apr) | 14 | 1 | 25 Apr | 25 Apr | ||||
| 7. | Common Sandpiper | 2 | 2 | 4 | 0 | 4 | 2 (25 Apr) | 43 | 3 | 25 Apr | 9 May | ||||
| 8. | Green Sandpiper | 36 | 0 | 36 | 0 | 36 | 16 (11 Apr) | 57 | 4 | 4 Apr | 25 Apr | ||||
| 9. | Redshank | 1 | 0 | 1 | 0 | 1 | 1 (4 Apr) | 14 | 1 | 4 Apr | 4 Apr | ||||
| 10. | Greenshank | 5 | 0 | 5 | 0 | 5 | 5 (25 Apr) | 14 | 1 | 25 Apr | 25 Apr | ||||
| 11. | Ruff | 28 | 0 | 28 | 0 | 28 | 28 (25 Apr) | 14 | 1 | 25 Apr | 25 Apr | ||||
| 12. | Mediterranean Gull | 124 | 3 | 127 | 0 | 127 | 114 (4 Apr) | 71 | 5 | 4 Apr | 9 May | ||||
| 13. | Lesser Black-backed Gull | 50 | 5 | 55 | 0 | 55 | 28 (25 Apr) | 57 | 4 | 11 Apr | 9 May | ||||
| 14. | White Stork | 30 | 2 | 32 | 2 | 30 | 29 (19 Apr) | 43 | 3 | 11 Apr | 9 May | ||||
| 15. | Cormorant | 74 | 8 | 82 | 0 | 82 | 64 (11 Apr) | 57 | 4 | 4 Apr | 9 May | ||||
| 16. | Great White Egret | 1 | 1 | 2 | 0 | 2 | 1 (19 Apr) | 29 | 2 | 19 Apr | 9 May | ||||
| 17. | Grey Heron | 10 | 0 | 10 | 0 | 10 | 4 (4 Apr) | 57 | 4 | 4 Apr | 19 Apr | ||||
| 18. | Purple Heron | 0 | 1 | 1 | 1 | 0 | 1 (9 May) | 14 | 1 | 9 May | 9 May | ||||
| 19. | Osprey | 1 | 0 | 1 | 0 | 1 | 1 (11 Apr) | 14 | 1 | 11 Apr | 11 Apr | ||||
| 20. | Marsh Harrier | 4 | 0 | 4 | 1 | 3 | 3 (19 Apr) | 29 | 2 | 11 Apr | 19 Apr | ||||
| 21. | Pallid Harrier | 1 | 0 | 1 | 0 | 1 | 1 (19 Apr) | 14 | 1 | 19 Apr | 19 Apr | ||||
| 22. | Red Kite | 1 | 0 | 1 | 0 | 1 | 1 (11 Apr) | 14 | 1 | 11 Apr | 11 Apr | ||||
| 23. | Black Kite | 1 | 1 | 2 | 0 | 2 | 1 (11 Apr) | 29 | 2 | 11 Apr | 9 May | ||||
| 24. | Black Woodpecker | 0 | 1 | 1 | 0 | 1 | 1 (9 May) | 14 | 1 | 9 May | 9 May | ||||
| 25. | Kestrel | 0 | 1 | 1 | 0 | 1 | 1 (9 May) | 14 | 1 | 9 May | 9 May | ||||
| 26. | Hobby | 0 | 1 | 1 | 0 | 1 | 1 (9 May) | 14 | 1 | 9 May | 9 May | ||||
| 27. | Jay | 19 | 0 | 19 | 4 | 15 | 19 (11 Apr) | 14 | 1 | 11 Apr | 11 Apr | ||||
| 28. | Skylark | 2 | 0 | 2 | 0 | 2 | 2 (11 Apr) | 14 | 1 | 11 Apr | 11 Apr | ||||
| 29. | Sand Martin | 25 | 7 | 32 | 0 | 32 | 11 (11 Apr) | 57 | 4 | 11 Apr | 9 May | ||||
| 30. | Swallow | 238 | 48 | 286 | 0 | 286 | 93 (11 Apr) | 86 | 6 | 4 Apr | 9 May | ||||
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | House Martin | 6 | 2 | 8 | 0 | 8 | 6 (11 Apr) | 29 | 2 | 11 Apr | 9 May | ||||
| 32. | Song Thrush | 56 | 1 | 57 | 0 | 57 | 55 (11 Apr) | 43 | 3 | 11 Apr | 9 May | ||||
| 33. | Redwing | 239 | 0 | 239 | 0 | 239 | 168 (5 Apr) | 43 | 3 | 4 Apr | 11 Apr | ||||
| 34. | Fieldfare | 141 | 0 | 141 | 0 | 141 | 98 (5 Apr) | 43 | 3 | 4 Apr | 11 Apr | ||||
| 35. | Blue-headed Wagtail | 58 | 2 | 60 | 0 | 60 | 29 (19 Apr) | 57 | 4 | 11 Apr | 8 May | ||||
| 36. | Yellow wagtail sp. | 0 | 23 | 23 | 0 | 23 | 23 (9 May) | 14 | 1 | 9 May | 9 May | ||||
| 37. | White Wagtail | 5 | 1 | 6 | 0 | 6 | 3 (11 Apr) | 43 | 3 | 4 Apr | 9 May | ||||
| 38. | Meadow Pipit | 3182 | 1 | 3183 | 0 | 3183 | 2284 (11 Apr) | 86 | 6 | 4 Apr | 9 May | ||||
| 39. | Tree Pipit | 13 | 1 | 14 | 0 | 14 | 6 (11 Apr) | 57 | 4 | 5 Apr | 9 May | ||||
| 40. | Chaffinch | 189 | 0 | 189 | 0 | 189 | 102 (5 Apr) | 43 | 3 | 4 Apr | 11 Apr | ||||
| 41. | Brambling | 4 | 0 | 4 | 0 | 4 | 3 (4 Apr) | 29 | 2 | 4 Apr | 5 Apr | ||||
| 42. | Hawfinch | 0 | 4 | 4 | 0 | 4 | 4 (9 May) | 14 | 1 | 9 May | 9 May | ||||
| 43. | Greenfinch | 2 | 0 | 2 | 0 | 2 | 2 (4 Apr) | 14 | 1 | 4 Apr | 4 Apr | ||||
| 44. | Linnet | 61 | 3 | 64 | 0 | 64 | 33 (11 Apr) | 86 | 6 | 4 Apr | 9 May | ||||
| 45. | Siskin | 2 | 0 | 2 | 0 | 2 | 2 (19 Apr) | 14 | 1 | 19 Apr | 19 Apr | ||||
| Species | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 4661 | 131 | 4792 | 8 | 4784 | 100 | 7 | ||||||||
| Observation hours | 30:37 | 9:58 | 40:35 | ||||||||||||
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