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Totals Vlieland - De Zwaluw 2021
| Species | Oct | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Dark-bellied Brent Goose | 18 | 18 | 18 | 0 | 17 ( 2 Oct) | 50 | 2 | 2 Oct | 21 Oct | ||||
| 2. | Greylag Goose | 29 | 29 | 17 | 12 | 29 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 3. | Egyptian Goose | 20 | 20 | 15 | 5 | 20 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 4. | Shelduck | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 5. | Gadwall | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 6. | Wigeon | 460 | 460 | 460 | 0 | 435 ( 2 Oct) | 100 | 4 | 2 Oct | 22 Oct | ||||
| 7. | Mallard | 38 | 38 | 38 | 0 | 38 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 8. | Pintail | 64 | 64 | 64 | 0 | 64 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 9. | Teal | 5 | 5 | 5 | 0 | 5 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 10. | Eider | 1 | 1 | 0 | 1 | 1 (22 Oct) | 25 | 1 | 22 Oct | 22 Oct | ||||
| 11. | Common Scoter | 123 | 123 | 69 | 54 | 82 (22 Oct) | 50 | 2 | 21 Oct | 22 Oct | ||||
| 12. | Red-breasted Merganser | 2 | 2 | 2 | 0 | 2 (21 Oct) | 25 | 1 | 21 Oct | 21 Oct | ||||
| 13. | Stock Dove | 1 | 1 | 0 | 1 | 1 ( 9 Oct) | 25 | 1 | 9 Oct | 9 Oct | ||||
| 14. | Woodpigeon | 30 | 30 | 30 | 0 | 30 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 15. | Collared Dove | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 16. | Great Crested Grebe | 1 | 1 | 1 | 0 | 1 (21 Oct) | 25 | 1 | 21 Oct | 21 Oct | ||||
| 17. | Oystercatcher | 3 | 3 | 3 | 0 | 2 ( 9 Oct) | 50 | 2 | 2 Oct | 9 Oct | ||||
| 18. | Grey Plover | 7 | 7 | 7 | 0 | 5 (22 Oct) | 50 | 2 | 2 Oct | 22 Oct | ||||
| 19. | Ringed Plover | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 20. | Lapwing | 16 | 16 | 15 | 1 | 16 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 21. | Curlew | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 22. | Bar-tailed Godwit | 35 | 35 | 35 | 0 | 35 (22 Oct) | 25 | 1 | 22 Oct | 22 Oct | ||||
| 23. | Snipe | 23 | 23 | 23 | 0 | 22 ( 2 Oct) | 50 | 2 | 2 Oct | 22 Oct | ||||
| 24. | Redshank | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 25. | Greenshank | 2 | 2 | 2 | 0 | 2 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 26. | Turnstone | 14 | 14 | 14 | 0 | 14 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 27. | Knot | 2555 | 2555 | 2555 | 0 | 2545 (21 Oct) | 50 | 2 | 21 Oct | 22 Oct | ||||
| 28. | Sanderling | 145 | 145 | 25 | 120 | 120 (21 Oct) | 50 | 2 | 2 Oct | 21 Oct | ||||
| 29. | Dunlin | 695 | 695 | 695 | 0 | 685 (21 Oct) | 50 | 2 | 2 Oct | 21 Oct | ||||
| 30. | Little Gull | 17 | 17 | 17 | 0 | 16 (21 Oct) | 50 | 2 | 21 Oct | 22 Oct | ||||
| Species | Oct | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Kittiwake | 219 | 219 | 214 | 5 | 204 (21 Oct) | 50 | 2 | 21 Oct | 22 Oct | ||||
| 32. | Black-headed Gull | 13 | 13 | 13 | 0 | 7 ( 2 Oct) | 75 | 3 | 2 Oct | 22 Oct | ||||
| 33. | Common Gull | 8 | 8 | 8 | 0 | 5 (21 Oct) | 50 | 2 | 2 Oct | 21 Oct | ||||
| 34. | Herring Gull | 665 | 665 | 665 | 0 | 644 ( 2 Oct) | 50 | 2 | 2 Oct | 9 Oct | ||||
| 35. | Great Black-backed Gull | 30 | 30 | 30 | 0 | 23 (21 Oct) | 50 | 2 | 2 Oct | 21 Oct | ||||
| 36. | Lesser Black-backed Gull | 4 | 4 | 4 | 0 | 4 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 37. | skua sp. | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 38. | Arctic Skua | 7 | 7 | 5 | 2 | 4 (21 Oct) | 75 | 3 | 2 Oct | 22 Oct | ||||
| 39. | Razorbill | 1 | 1 | 1 | 0 | 1 (22 Oct) | 25 | 1 | 22 Oct | 22 Oct | ||||
| 40. | Razorbill/Guillemot | 1740 | 1740 | 1715 | 25 | 1710 (21 Oct) | 50 | 2 | 21 Oct | 22 Oct | ||||
| 41. | Little Auk | 1 | 1 | 0 | 1 | 1 (22 Oct) | 25 | 1 | 22 Oct | 22 Oct | ||||
| 42. | Guillemot | 5 | 5 | 4 | 1 | 4 (22 Oct) | 50 | 2 | 21 Oct | 22 Oct | ||||
| 43. | Red-throated Diver | 206 | 206 | 203 | 3 | 204 (21 Oct) | 50 | 2 | 21 Oct | 22 Oct | ||||
| 44. | diver sp. | 2 | 2 | 2 | 0 | 2 (22 Oct) | 25 | 1 | 22 Oct | 22 Oct | ||||
| 45. | Gannet | 114 | 114 | 112 | 2 | 108 (21 Oct) | 50 | 2 | 21 Oct | 22 Oct | ||||
| 46. | Cormorant | 89 | 89 | 83 | 6 | 69 ( 2 Oct) | 100 | 4 | 2 Oct | 22 Oct | ||||
| 47. | Spoonbill | 112 | 112 | 107 | 5 | 112 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 48. | Grey Heron | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 49. | Sparrowhawk | 5 | 5 | 5 | 0 | 5 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 50. | Marsh Harrier | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 51. | Common Buzzard | 4 | 4 | 4 | 0 | 4 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 52. | Great Spotted Woodpecker | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 53. | Kestrel | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 54. | Peregrine | 3 | 3 | 3 | 0 | 2 ( 2 Oct) | 50 | 2 | 2 Oct | 22 Oct | ||||
| 55. | Jackdaw | 36 | 36 | 36 | 0 | 36 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 56. | Carrion Crow | 25 | 25 | 25 | 0 | 25 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 57. | Blue Tit | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 58. | Wood Lark | 26 | 26 | 26 | 0 | 26 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 59. | Shore Lark | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 60. | Chiffchaff | 2 | 2 | 2 | 0 | 2 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| Species | Oct | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Firecrest | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 62. | Goldcrest | 2 | 2 | 2 | 0 | 2 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 63. | Starling | 149 | 149 | 28 | 121 | 80 (21 Oct) | 75 | 3 | 2 Oct | 21 Oct | ||||
| 64. | Song Thrush | 86 | 86 | 86 | 0 | 84 ( 2 Oct) | 50 | 2 | 2 Oct | 9 Oct | ||||
| 65. | Stonechat | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 66. | Dunnock | 24 | 24 | 24 | 0 | 24 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 67. | Yellow wagtail sp. | 2 | 2 | 2 | 0 | 2 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 68. | Grey Wagtail | 2 | 2 | 2 | 0 | 2 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 69. | alba wagtail sp. | 17 | 17 | 17 | 0 | 17 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 70. | Meadow Pipit | 576 | 576 | 571 | 5 | 561 ( 2 Oct) | 50 | 2 | 2 Oct | 9 Oct | ||||
| 71. | Rock Pipit | 26 | 26 | 26 | 0 | 26 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 72. | Rock Pipit/Water Pipit | 1 | 1 | 1 | 0 | 1 ( 9 Oct) | 25 | 1 | 9 Oct | 9 Oct | ||||
| 73. | Chaffinch | 1139 | 1139 | 1108 | 31 | 1104 ( 2 Oct) | 50 | 2 | 2 Oct | 9 Oct | ||||
| 74. | Brambling | 20 | 20 | 19 | 1 | 19 ( 2 Oct) | 50 | 2 | 2 Oct | 9 Oct | ||||
| 75. | Bullfinch | 2 | 2 | 2 | 0 | 2 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 76. | Greenfinch | 13 | 13 | 13 | 0 | 13 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 77. | Linnet | 294 | 294 | 294 | 0 | 294 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 78. | redpoll sp. | 2 | 2 | 2 | 0 | 2 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 79. | Crossbill | 75 | 75 | 75 | 0 | 75 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 80. | Goldfinch | 8 | 8 | 8 | 0 | 7 ( 2 Oct) | 50 | 2 | 2 Oct | 9 Oct | ||||
| 81. | Serin | 2 | 2 | 2 | 0 | 2 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 82. | Siskin | 359 | 359 | 294 | 65 | 180 ( 2 Oct) | 50 | 2 | 2 Oct | 9 Oct | ||||
| 83. | Lapland Bunting | 2 | 2 | 2 | 0 | 2 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 84. | Reed Bunting | 4 | 4 | 4 | 0 | 4 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| Other species | ||||||||||||||
| Species | Oct | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Hummingbird Hawk-moth | 1 | 1 | 1 | 0 | 1 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 2. | Red Admiral | 6 | 6 | 6 | 0 | 5 ( 2 Oct) | 50 | 2 | 2 Oct | 9 Oct | ||||
| Other species | ||||||||||||||
| Species | Oct | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Darter unknown | 11 | 11 | 11 | 0 | 11 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| 2. | Migrant Hawker | 11 | 11 | 11 | 0 | 11 ( 2 Oct) | 25 | 1 | 2 Oct | 2 Oct | ||||
| Species | Oct | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 10470 | 10470 | 10003 | 467 | 100 | 4 | ||||||||
| Observation hours | 12:45 | 12:45 | ||||||||||||
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