Also present
Totals Bos van Aa Zemst (ringen) 2020
| Species | Jun | Jul | Aug | Sep | Oct | Totals | Newly ringed | Retraps | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Teal | 0 | 0 | 0 | 2 | 0 | 2 | 2 | 0 | 1 ( 5 Sep) | 9 | 2 | 5 Sep | 12 Sep | ||||
| 2. | Pheasant | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (12 Sep) | 5 | 1 | 12 Sep | 12 Sep | ||||
| 3. | Water Rail | 0 | 0 | 4 | 5 | 2 | 11 | 5 | 6 | 2 (16 Aug) | 36 | 8 | 15 Aug | 10 Oct | ||||
| 4. | Spotted Crake | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (15 Aug) | 5 | 1 | 15 Aug | 15 Aug | ||||
| 5. | Moorhen | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (20 Sep) | 5 | 1 | 20 Sep | 20 Sep | ||||
| 6. | Lapwing | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (16 Aug) | 5 | 1 | 16 Aug | 16 Aug | ||||
| 7. | Jack Snipe | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 (18 Oct) | 5 | 1 | 18 Oct | 18 Oct | ||||
| 8. | Snipe | 0 | 0 | 2 | 0 | 0 | 2 | 2 | 0 | 1 (15 Aug) | 9 | 2 | 15 Aug | 16 Aug | ||||
| 9. | Common Sandpiper | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 ( 5 Sep) | 5 | 1 | 5 Sep | 5 Sep | ||||
| 10. | Green Sandpiper | 0 | 0 | 8 | 3 | 0 | 11 | 11 | 0 | 3 (16 Aug) | 27 | 6 | 15 Aug | 13 Sep | ||||
| 11. | Sparrowhawk | 0 | 0 | 1 | 1 | 1 | 3 | 3 | 0 | 1 (17 Aug) | 14 | 3 | 17 Aug | 17 Oct | ||||
| 12. | Goshawk | 3 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 3 ( 2 Jun) | 5 | 1 | 2 Jun | 2 Jun | ||||
| 13. | Kingfisher | 0 | 1 | 5 | 1 | 0 | 7 | 6 | 1 | 4 (16 Aug) | 18 | 4 | 18 Jul | 20 Sep | ||||
| 14. | Great Spotted Woodpecker | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 ( 5 Sep) | 5 | 1 | 5 Sep | 5 Sep | ||||
| 15. | Marsh Tit | 0 | 2 | 0 | 0 | 0 | 2 | 2 | 0 | 1 (17 Jul) | 9 | 2 | 17 Jul | 18 Jul | ||||
| 16. | Blue Tit | 0 | 9 | 27 | 29 | 28 | 93 | 77 | 16 | 13 ( 5 Sep) | 82 | 18 | 17 Jul | 31 Oct | ||||
| 17. | Great Tit | 0 | 12 | 21 | 15 | 7 | 55 | 42 | 13 | 10 ( 5 Sep) | 68 | 15 | 17 Jul | 31 Oct | ||||
| 18. | Sand Martin | 243 | 0 | 0 | 0 | 0 | 243 | 187 | 56 | 243 (21 Jun) | 5 | 1 | 21 Jun | 21 Jun | ||||
| 19. | Cetti's Warbler | 0 | 4 | 5 | 2 | 1 | 12 | 5 | 7 | 3 (18 Jul) | 41 | 9 | 17 Jul | 17 Oct | ||||
| 20. | Long-tailed Tit | 0 | 0 | 15 | 6 | 6 | 27 | 21 | 6 | 15 (23 Aug) | 23 | 5 | 23 Aug | 31 Oct | ||||
| 21. | Willow Warbler | 0 | 0 | 23 | 6 | 0 | 29 | 28 | 1 | 7 (17 Aug) | 41 | 9 | 1 Aug | 20 Sep | ||||
| 22. | Chiffchaff | 0 | 11 | 61 | 133 | 77 | 282 | 275 | 7 | 39 (20 Sep) | 86 | 19 | 17 Jul | 24 Oct | ||||
| 23. | Chiffchaff (Siberian - tristis) | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 (17 Oct) | 5 | 1 | 17 Oct | 17 Oct | ||||
| 24. | abietinus Chiffchaff | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 (18 Oct) | 5 | 1 | 18 Oct | 18 Oct | ||||
| 25. | Sedge Warbler | 0 | 3 | 37 | 6 | 0 | 46 | 45 | 1 | 16 ( 1 Aug) | 45 | 10 | 18 Jul | 20 Sep | ||||
| 26. | Reed Warbler | 0 | 23 | 180 | 88 | 2 | 293 | 282 | 11 | 62 (17 Aug) | 73 | 16 | 17 Jul | 18 Oct | ||||
| 27. | Marsh Warbler | 0 | 18 | 15 | 1 | 0 | 34 | 34 | 0 | 17 (18 Jul) | 36 | 8 | 17 Jul | 6 Sep | ||||
| 28. | Melodious Warbler | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (18 Jul) | 5 | 1 | 18 Jul | 18 Jul | ||||
| 29. | Icterine Warbler | 0 | 0 | 1 | 1 | 0 | 2 | 2 | 0 | 1 ( 8 Aug) | 9 | 2 | 8 Aug | 6 Sep | ||||
| 30. | Savi's Warbler | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (18 Jul) | 5 | 1 | 18 Jul | 18 Jul | ||||
| Species | Jun | Jul | Aug | Sep | Oct | Totals | Newly ringed | Retraps | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Grasshopper Warbler | 0 | 0 | 12 | 1 | 0 | 13 | 13 | 0 | 4 (15 Aug) | 32 | 7 | 1 Aug | 20 Sep | ||||
| 32. | Blackcap | 0 | 10 | 98 | 793 | 40 | 941 | 925 | 16 | 175 (12 Sep) | 91 | 20 | 17 Jul | 31 Oct | ||||
| 33. | Garden Warbler | 0 | 1 | 59 | 8 | 0 | 68 | 67 | 1 | 22 ( 8 Aug) | 50 | 11 | 18 Jul | 19 Sep | ||||
| 34. | Lesser Whitethroat | 0 | 0 | 2 | 3 | 0 | 5 | 5 | 0 | 2 ( 1 Aug) | 18 | 4 | 1 Aug | 20 Sep | ||||
| 35. | Whitethroat | 0 | 4 | 24 | 9 | 0 | 37 | 37 | 0 | 9 ( 1 Aug) | 59 | 13 | 17 Jul | 20 Sep | ||||
| 36. | Firecrest | 0 | 0 | 0 | 2 | 10 | 12 | 12 | 0 | 5 (31 Oct) | 27 | 6 | 13 Sep | 31 Oct | ||||
| 37. | Goldcrest | 0 | 0 | 0 | 0 | 15 | 15 | 15 | 0 | 7 (17 Oct) | 18 | 4 | 17 Oct | 31 Oct | ||||
| 38. | Wren | 0 | 1 | 2 | 1 | 5 | 9 | 8 | 1 | 2 (17 Oct) | 32 | 7 | 18 Jul | 18 Oct | ||||
| 39. | Short-toed Tree Creeper | 0 | 0 | 2 | 0 | 0 | 2 | 2 | 0 | 1 ( 1 Aug) | 9 | 2 | 1 Aug | 17 Aug | ||||
| 40. | Song Thrush | 0 | 1 | 2 | 1 | 18 | 22 | 21 | 1 | 7 (10 Oct) | 36 | 8 | 18 Jul | 24 Oct | ||||
| 41. | Redwing | 0 | 0 | 0 | 0 | 23 | 23 | 23 | 0 | 10 (17 Oct) | 23 | 5 | 10 Oct | 31 Oct | ||||
| 42. | Blackbird | 0 | 0 | 0 | 2 | 20 | 22 | 21 | 1 | 8 (17 Oct) | 27 | 6 | 19 Sep | 24 Oct | ||||
| 43. | Spotted Flycatcher | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (19 Sep) | 5 | 1 | 19 Sep | 19 Sep | ||||
| 44. | Robin | 0 | 3 | 39 | 115 | 76 | 233 | 213 | 20 | 29 (20 Sep) | 86 | 19 | 18 Jul | 31 Oct | ||||
| 45. | Bluethroat | 0 | 2 | 9 | 0 | 0 | 11 | 8 | 3 | 4 ( 1 Aug) | 23 | 5 | 18 Jul | 17 Aug | ||||
| 46. | White-spotted Bluethroat | 0 | 0 | 2 | 0 | 0 | 2 | 1 | 1 | 2 (23 Aug) | 5 | 1 | 23 Aug | 23 Aug | ||||
| 47. | Redstart | 0 | 0 | 5 | 28 | 0 | 33 | 33 | 0 | 15 (19 Sep) | 32 | 7 | 16 Aug | 20 Sep | ||||
| 48. | Tree Sparrow | 0 | 0 | 0 | 0 | 3 | 3 | 3 | 0 | 3 (17 Oct) | 5 | 1 | 17 Oct | 17 Oct | ||||
| 49. | Dunnock | 0 | 0 | 0 | 11 | 17 | 28 | 27 | 1 | 11 (31 Oct) | 32 | 7 | 5 Sep | 31 Oct | ||||
| 50. | Grey Wagtail | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (12 Sep) | 5 | 1 | 12 Sep | 12 Sep | ||||
| 51. | Tree Pipit | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (20 Sep) | 5 | 1 | 20 Sep | 20 Sep | ||||
| 52. | Chaffinch | 0 | 0 | 1 | 0 | 1 | 2 | 2 | 0 | 1 ( 8 Aug) | 9 | 2 | 8 Aug | 17 Oct | ||||
| 53. | Lesser Redpoll | 0 | 0 | 0 | 0 | 3 | 3 | 3 | 0 | 2 (18 Oct) | 9 | 2 | 18 Oct | 31 Oct | ||||
| 54. | Siskin | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 (10 Oct) | 5 | 1 | 10 Oct | 10 Oct | ||||
| 55. | Reed Bunting | 0 | 0 | 1 | 2 | 63 | 66 | 64 | 2 | 24 (17 Oct) | 41 | 9 | 1 Aug | 31 Oct | ||||
| Species | Jun | Jul | Aug | Sep | Oct | Totals | Newly ringed | Retraps | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 246 | 107 | 665 | 1282 | 422 | 2722 | 2550 | 172 | 100 | 22 | ||||||||
| Observation hours | 4:30 | 7:00 | 31:30 | 31:15 | 22:00 | 96:15 | ||||||||||||
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