Totals VRS Stedendriehoek 2021
| Year | |
| Period | |
| count-field | |
| Also present | |
| Species | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Totals | Newly ringed | Retraps | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Water Rail | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (2 Oct) | 3 | 1 | 2 Oct | 2 Oct | ||||
| 2. | Kingfisher | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 3 | 3 | 0 | 1 (9 Sep) | 10 | 3 | 9 Sep | 5 Oct | ||||
| 3. | Great Spotted Woodpecker | 0 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 1 (15 May) | 10 | 3 | 15 May | 7 Jul | ||||
| 4. | Jay | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 3 | 2 | 1 | 2 (22 Sep) | 7 | 2 | 8 May | 22 Sep | ||||
| 5. | Willow Tit | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 3 | 1 | 2 | 1 (16 Jul) | 10 | 3 | 16 Jul | 21 Aug | ||||
| 6. | Blue Tit | 0 | 2 | 0 | 2 | 1 | 12 | 73 | 15 | 105 | 89 | 16 | 20 (24 Oct) | 52 | 15 | 8 May | 4 Nov | ||||
| 7. | Great Tit | 4 | 5 | 1 | 13 | 17 | 16 | 32 | 0 | 88 | 67 | 21 | 10 (13 Oct) | 79 | 23 | 23 Apr | 29 Oct | ||||
| 8. | Cetti's Warbler | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 1 | 1 | 1 (2 Oct) | 7 | 2 | 2 Oct | 13 Oct | ||||
| 9. | Long-tailed Tit | 0 | 2 | 0 | 0 | 0 | 0 | 14 | 4 | 20 | 14 | 6 | 5 (5 Oct) | 17 | 5 | 28 May | 4 Nov | ||||
| 10. | Willow Warbler | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 3 | 3 | 0 | 1 (8 May) | 10 | 3 | 8 May | 4 Sep | ||||
| 11. | Chiffchaff | 5 | 10 | 1 | 14 | 3 | 21 | 35 | 0 | 89 | 81 | 8 | 18 (5 Oct) | 83 | 24 | 23 Apr | 29 Oct | ||||
| 12. | Sedge Warbler | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 2 | 2 | 0 | 1 (21 Aug) | 7 | 2 | 21 Aug | 9 Sep | ||||
| 13. | Reed Warbler | 0 | 11 | 6 | 15 | 22 | 14 | 1 | 0 | 69 | 56 | 13 | 7 (7 Aug) | 66 | 19 | 8 May | 2 Oct | ||||
| 14. | Marsh Warbler | 0 | 13 | 11 | 12 | 4 | 0 | 0 | 0 | 40 | 31 | 9 | 11 (4 Jun) | 34 | 10 | 15 May | 21 Aug | ||||
| 15. | Icterine Warbler | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 2 | 0 | 1 (21 May) | 7 | 2 | 21 May | 7 Aug | ||||
| 16. | Grasshopper Warbler | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (19 Aug) | 3 | 1 | 19 Aug | 19 Aug | ||||
| 17. | Blackcap | 11 | 15 | 3 | 18 | 32 | 115 | 27 | 0 | 221 | 198 | 23 | 28 (9 Sep) | 90 | 26 | 23 Apr | 24 Oct | ||||
| 18. | Garden Warbler | 0 | 10 | 1 | 2 | 5 | 4 | 0 | 0 | 22 | 19 | 3 | 6 (8 May) | 38 | 11 | 8 May | 4 Sep | ||||
| 19. | Lesser Whitethroat | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 3 | 3 | 0 | 1 (8 May) | 10 | 3 | 8 May | 4 Sep | ||||
| 20. | Whitethroat | 0 | 8 | 1 | 9 | 5 | 0 | 1 | 0 | 24 | 19 | 5 | 4 (15 May) | 41 | 12 | 8 May | 2 Oct | ||||
| 21. | Firecrest | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 2 | 0 | 1 (2 Oct) | 7 | 2 | 2 Oct | 29 Oct | ||||
| 22. | Wren | 4 | 3 | 0 | 11 | 14 | 8 | 13 | 3 | 56 | 35 | 21 | 7 (19 Aug) | 79 | 23 | 23 Apr | 4 Nov | ||||
| 23. | Short-toed Tree Creeper | 0 | 1 | 0 | 1 | 0 | 0 | 4 | 0 | 6 | 4 | 2 | 3 (13 Oct) | 14 | 4 | 8 May | 13 Oct | ||||
| 24. | Song Thrush | 0 | 4 | 1 | 1 | 1 | 4 | 11 | 0 | 22 | 16 | 6 | 4 (8 May) | 41 | 12 | 8 May | 29 Oct | ||||
| 25. | Blackbird | 2 | 3 | 2 | 7 | 0 | 0 | 12 | 3 | 29 | 25 | 4 | 4 (29 Oct) | 41 | 12 | 23 Apr | 4 Nov | ||||
| 26. | Robin | 6 | 1 | 0 | 0 | 6 | 22 | 77 | 8 | 120 | 94 | 26 | 16 (24 Oct) | 76 | 22 | 23 Apr | 4 Nov | ||||
| 27. | White-spotted Bluethroat | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (9 Sep) | 3 | 1 | 9 Sep | 9 Sep | ||||
| 28. | Pied Flycatcher | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (16 Aug) | 3 | 1 | 16 Aug | 16 Aug | ||||
| 29. | Stonechat | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (7 Jul) | 3 | 1 | 7 Jul | 7 Jul | ||||
| 30. | Tree Sparrow | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (25 Aug) | 3 | 1 | 25 Aug | 25 Aug | ||||
| Species | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Totals | Newly ringed | Retraps | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | House Sparrow | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (2 Oct) | 3 | 1 | 2 Oct | 2 Oct | ||||
| 32. | Dunnock | 1 | 0 | 0 | 0 | 4 | 8 | 20 | 0 | 33 | 33 | 0 | 11 (5 Oct) | 41 | 12 | 23 Apr | 29 Oct | ||||
| 33. | Chaffinch | 0 | 6 | 0 | 1 | 0 | 1 | 1 | 1 | 10 | 10 | 0 | 2 (8 May) | 28 | 8 | 8 May | 4 Nov | ||||
| 34. | Brambling | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (18 Oct) | 3 | 1 | 18 Oct | 18 Oct | ||||
| 35. | Hawfinch | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (13 Oct) | 3 | 1 | 13 Oct | 13 Oct | ||||
| 36. | Bullfinch | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 2 (23 Apr) | 7 | 2 | 23 Apr | 7 Jul | ||||
| 37. | Goldfinch | 0 | 0 | 0 | 0 | 6 | 2 | 3 | 0 | 11 | 11 | 0 | 6 (7 Aug) | 21 | 6 | 7 Aug | 24 Oct | ||||
| 38. | Siskin | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 2 | 9 | 9 | 0 | 6 (13 Oct) | 10 | 3 | 13 Oct | 4 Nov | ||||
| 39. | Reed Bunting | 2 | 5 | 0 | 1 | 0 | 4 | 7 | 0 | 19 | 16 | 3 | 4 (8 May) | 31 | 9 | 23 Apr | 24 Oct | ||||
| Species | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Totals | Newly ringed | Retraps | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 37 | 105 | 27 | 111 | 129 | 239 | 347 | 36 | 1031 | 861 | 170 | 100 | 29 | ||||||||
| Observation hours | 6:00 | 23:30 | 6:30 | 19:30 | 23:15 | 29:00 | 35:45 | 4:45 | 148:15 | ||||||||||||
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