Totals Schiermonnikoog - de Marlijn 2020
| Year | |
| Period | |
| count-field | |
| Also present | |
| Species | Aug | Sep | Oct | Nov | Dec | Totals | W | E | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Dark-bellied Brent Goose | 0 | 3 | 2344 | 493 | 0 | 2840 | 2839 | 1 | 2320 (15 Oct) | 39 | 7 | 2 Sep | 23 Nov | ||||
| 2. | Pale-bellied Brent Goose | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (20 Nov) | 6 | 1 | 20 Nov | 20 Nov | ||||
| 3. | Barnacle Goose | 0 | 0 | 20 | 1 | 0 | 21 | 18 | 3 | 12 (28 Oct) | 17 | 3 | 26 Oct | 23 Nov | ||||
| 4. | Greylag Goose | 0 | 0 | 1 | 2 | 0 | 3 | 3 | 0 | 2 (23 Nov) | 11 | 2 | 15 Oct | 23 Nov | ||||
| 5. | Anser sp. | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 (28 Oct) | 6 | 1 | 28 Oct | 28 Oct | ||||
| 6. | goose sp. | 0 | 6 | 0 | 0 | 0 | 6 | 6 | 0 | 6 ( 1 Sep) | 6 | 1 | 1 Sep | 1 Sep | ||||
| 7. | Eurasian White-fronted Goose | 0 | 0 | 0 | 7 | 0 | 7 | 7 | 0 | 7 (20 Nov) | 6 | 1 | 20 Nov | 20 Nov | ||||
| 8. | Shelduck | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 2 | 2 ( 1 Sep) | 6 | 1 | 1 Sep | 1 Sep | ||||
| 9. | Shoveler | 0 | 0 | 4 | 0 | 0 | 4 | 4 | 0 | 4 (15 Oct) | 6 | 1 | 15 Oct | 15 Oct | ||||
| 10. | Wigeon | 9 | 0 | 97 | 23 | 0 | 129 | 129 | 0 | 86 (15 Oct) | 28 | 5 | 31 Aug | 23 Nov | ||||
| 11. | Pintail | 0 | 12 | 0 | 7 | 0 | 19 | 19 | 0 | 12 ( 1 Sep) | 11 | 2 | 1 Sep | 23 Nov | ||||
| 12. | Teal | 113 | 9 | 7 | 18 | 0 | 147 | 147 | 0 | 79 (29 Aug) | 39 | 7 | 29 Aug | 20 Nov | ||||
| 13. | duck sp. | 6 | 14 | 0 | 7 | 0 | 27 | 27 | 0 | 14 ( 1 Sep) | 17 | 3 | 30 Aug | 20 Nov | ||||
| 14. | Pochard | 11 | 0 | 0 | 0 | 0 | 11 | 11 | 0 | 11 (29 Aug) | 6 | 1 | 29 Aug | 29 Aug | ||||
| 15. | Scaup | 0 | 0 | 56 | 16 | 3 | 75 | 75 | 0 | 41 (28 Oct) | 39 | 7 | 24 Oct | 2 Dec | ||||
| 16. | Aythya sp. | 0 | 0 | 0 | 3 | 0 | 3 | 3 | 0 | 3 (20 Nov) | 6 | 1 | 20 Nov | 20 Nov | ||||
| 17. | Eider | 83 | 28 | 507 | 45 | 10 | 673 | 500 | 173 | 233 (15 Oct) | 83 | 15 | 29 Aug | 2 Dec | ||||
| 18. | Velvet Scoter | 0 | 0 | 18 | 16 | 2 | 36 | 33 | 3 | 14 (15 Oct) | 39 | 7 | 15 Oct | 2 Dec | ||||
| 19. | Common Scoter | 1805 | 1218 | 4886 | 652 | 0 | 8561 | 7177 | 1384 | 1210 (15 Oct) | 78 | 14 | 29 Aug | 20 Nov | ||||
| 20. | Long-tailed Duck | 0 | 0 | 1 | 4 | 0 | 5 | 5 | 0 | 3 (22 Nov) | 17 | 3 | 29 Oct | 22 Nov | ||||
| 21. | Goldeneye | 0 | 0 | 4 | 12 | 1 | 17 | 17 | 0 | 11 (20 Nov) | 33 | 6 | 15 Oct | 2 Dec | ||||
| 22. | Goosander | 0 | 0 | 0 | 3 | 0 | 3 | 3 | 0 | 3 (20 Nov) | 6 | 1 | 20 Nov | 20 Nov | ||||
| 23. | Red-breasted Merganser | 0 | 0 | 68 | 64 | 1 | 133 | 129 | 4 | 58 (20 Nov) | 56 | 10 | 11 Oct | 2 Dec | ||||
| 24. | Red-necked Grebe | 0 | 0 | 1 | 1 | 0 | 2 | 2 | 0 | 1 (18 Oct) | 11 | 2 | 18 Oct | 23 Nov | ||||
| 25. | Great Crested Grebe | 0 | 0 | 7 | 1 | 0 | 8 | 8 | 0 | 5 (29 Oct) | 22 | 4 | 18 Oct | 20 Nov | ||||
| 26. | Slavonian Grebe | 0 | 0 | 0 | 2 | 0 | 2 | 2 | 0 | 1 (20 Nov) | 11 | 2 | 20 Nov | 22 Nov | ||||
| 27. | Oystercatcher | 3 | 1 | 1 | 0 | 0 | 5 | 4 | 1 | 3 (30 Aug) | 17 | 3 | 30 Aug | 24 Oct | ||||
| 28. | Grey Plover | 0 | 0 | 6 | 0 | 230 | 236 | 236 | 0 | 230 ( 2 Dec) | 17 | 3 | 18 Oct | 2 Dec | ||||
| 29. | Golden Plover | 50 | 1 | 0 | 0 | 0 | 51 | 51 | 0 | 50 (30 Aug) | 11 | 2 | 30 Aug | 1 Sep | ||||
| 30. | Dotterel | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (29 Aug) | 6 | 1 | 29 Aug | 29 Aug | ||||
| Species | Aug | Sep | Oct | Nov | Dec | Totals | W | E | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Ringed Plover | 21 | 0 | 0 | 0 | 0 | 21 | 16 | 5 | 12 (30 Aug) | 17 | 3 | 29 Aug | 31 Aug | ||||
| 32. | Whimbrel | 6 | 1 | 0 | 0 | 0 | 7 | 7 | 0 | 5 (29 Aug) | 17 | 3 | 29 Aug | 1 Sep | ||||
| 33. | Curlew | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 (28 Oct) | 6 | 1 | 28 Oct | 28 Oct | ||||
| 34. | Bar-tailed Godwit | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 4 Sep) | 6 | 1 | 4 Sep | 4 Sep | ||||
| 35. | Grey Phalarope | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (23 Nov) | 6 | 1 | 23 Nov | 23 Nov | ||||
| 36. | Redshank | 0 | 5 | 0 | 0 | 0 | 5 | 4 | 1 | 4 ( 1 Sep) | 11 | 2 | 1 Sep | 2 Sep | ||||
| 37. | Greenshank | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 2 Sep) | 6 | 1 | 2 Sep | 2 Sep | ||||
| 38. | Turnstone | 14 | 5 | 41 | 0 | 0 | 60 | 44 | 16 | 41 (26 Oct) | 28 | 5 | 29 Aug | 26 Oct | ||||
| 39. | Knot | 14 | 0 | 0 | 0 | 0 | 14 | 14 | 0 | 14 (30 Aug) | 6 | 1 | 30 Aug | 30 Aug | ||||
| 40. | wader sp. | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 1 Sep) | 6 | 1 | 1 Sep | 1 Sep | ||||
| 41. | Sanderling | 186 | 186 | 97 | 14 | 0 | 483 | 349 | 134 | 178 ( 1 Sep) | 61 | 11 | 29 Aug | 20 Nov | ||||
| 42. | Dunlin | 4 | 9 | 1 | 6 | 180 | 200 | 200 | 0 | 180 ( 2 Dec) | 33 | 6 | 29 Aug | 2 Dec | ||||
| 43. | Purple Sandpiper | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (28 Oct) | 6 | 1 | 28 Oct | 28 Oct | ||||
| 44. | Black Tern | 21 | 1 | 0 | 0 | 0 | 22 | 22 | 0 | 12 (30 Aug) | 22 | 4 | 29 Aug | 5 Sep | ||||
| 45. | Arctic Tern | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (18 Oct) | 6 | 1 | 18 Oct | 18 Oct | ||||
| 46. | Common/Arctic Tern | 545 | 153 | 0 | 0 | 0 | 698 | 635 | 63 | 404 (30 Aug) | 33 | 6 | 29 Aug | 5 Sep | ||||
| 47. | Common Tern | 0 | 3 | 1 | 0 | 0 | 4 | 4 | 0 | 3 ( 1 Sep) | 11 | 2 | 1 Sep | 29 Oct | ||||
| 48. | Sandwich Tern | 388 | 204 | 33 | 2 | 0 | 627 | 587 | 40 | 205 (29 Aug) | 83 | 15 | 29 Aug | 22 Nov | ||||
| 49. | Little Gull | 0 | 0 | 81 | 31 | 2 | 114 | 111 | 3 | 35 (18 Oct) | 44 | 8 | 18 Oct | 2 Dec | ||||
| 50. | Kittiwake | 0 | 0 | 5 | 8 | 12 | 25 | 25 | 0 | 12 ( 2 Dec) | 22 | 4 | 18 Oct | 2 Dec | ||||
| 51. | Black-headed Gull | 74 | 36 | 661 | 248 | 26 | 1045 | 981 | 64 | 282 (18 Oct) | 83 | 15 | 29 Aug | 2 Dec | ||||
| 52. | Mediterranean Gull | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (29 Aug) | 6 | 1 | 29 Aug | 29 Aug | ||||
| 53. | Common Gull | 8 | 7 | 642 | 0 | 0 | 657 | 642 | 15 | 226 (18 Oct) | 61 | 11 | 29 Aug | 29 Oct | ||||
| 54. | Caspian Gull | 0 | 0 | 0 | 2 | 0 | 2 | 2 | 0 | 2 (20 Nov) | 6 | 1 | 20 Nov | 20 Nov | ||||
| 55. | Herring Gull | 0 | 0 | 57 | 0 | 0 | 57 | 57 | 0 | 40 (11 Oct) | 11 | 2 | 11 Oct | 18 Oct | ||||
| 56. | Great Black-backed Gull | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (15 Oct) | 6 | 1 | 15 Oct | 15 Oct | ||||
| 57. | Lesser Black-backed Gull | 0 | 0 | 169 | 0 | 0 | 169 | 169 | 0 | 142 (11 Oct) | 11 | 2 | 11 Oct | 18 Oct | ||||
| 58. | skua sp. | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 5 Sep) | 6 | 1 | 5 Sep | 5 Sep | ||||
| 59. | Arctic Skua | 2 | 3 | 1 | 0 | 0 | 6 | 4 | 2 | 3 ( 5 Sep) | 22 | 4 | 29 Aug | 29 Oct | ||||
| 60. | Pomarine Skua | 0 | 0 | 1 | 1 | 1 | 3 | 3 | 0 | 1 (29 Oct) | 17 | 3 | 29 Oct | 2 Dec | ||||
| Species | Aug | Sep | Oct | Nov | Dec | Totals | W | E | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Great Skua | 0 | 0 | 3 | 0 | 0 | 3 | 3 | 0 | 2 (28 Oct) | 11 | 2 | 28 Oct | 29 Oct | ||||
| 62. | Puffin | 0 | 0 | 0 | 2 | 0 | 2 | 2 | 0 | 1 (22 Nov) | 11 | 2 | 22 Nov | 23 Nov | ||||
| 63. | Black Guillemot | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (26 Oct) | 6 | 1 | 26 Oct | 26 Oct | ||||
| 64. | Razorbill | 0 | 0 | 5 | 10 | 1 | 16 | 16 | 0 | 8 (22 Nov) | 28 | 5 | 18 Oct | 2 Dec | ||||
| 65. | Razorbill/Guillemot | 0 | 0 | 533 | 13 | 9 | 555 | 463 | 92 | 190 (28 Oct) | 50 | 9 | 11 Oct | 2 Dec | ||||
| 66. | Little Auk | 0 | 0 | 0 | 3 | 1 | 4 | 4 | 0 | 2 (20 Nov) | 17 | 3 | 20 Nov | 2 Dec | ||||
| 67. | Guillemot | 0 | 0 | 24 | 0 | 1 | 25 | 25 | 0 | 12 (18 Oct) | 22 | 4 | 18 Oct | 2 Dec | ||||
| 68. | Red-throated Diver | 2 | 0 | 118 | 67 | 45 | 232 | 232 | 0 | 67 (20 Nov) | 56 | 10 | 31 Aug | 2 Dec | ||||
| 69. | Black-throated Diver | 0 | 0 | 1 | 8 | 0 | 9 | 9 | 0 | 6 (22 Nov) | 17 | 3 | 15 Oct | 22 Nov | ||||
| 70. | Great Northern Diver | 0 | 0 | 1 | 1 | 0 | 2 | 1 | 1 | 1 (29 Oct) | 11 | 2 | 29 Oct | 23 Nov | ||||
| 71. | diver sp. | 1 | 1 | 118 | 62 | 11 | 193 | 191 | 2 | 58 (23 Nov) | 61 | 11 | 31 Aug | 2 Dec | ||||
| 72. | Leach's Petrel | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (20 Nov) | 6 | 1 | 20 Nov | 20 Nov | ||||
| 73. | Fulmar | 0 | 0 | 0 | 0 | 3 | 3 | 3 | 0 | 3 ( 2 Dec) | 6 | 1 | 2 Dec | 2 Dec | ||||
| 74. | Sooty Shearwater | 0 | 31 | 0 | 0 | 0 | 31 | 31 | 0 | 31 ( 5 Sep) | 6 | 1 | 5 Sep | 5 Sep | ||||
| 75. | Gannet | 13 | 15 | 124 | 0 | 2 | 154 | 142 | 12 | 50 (29 Oct) | 67 | 12 | 30 Aug | 2 Dec | ||||
| 76. | Cormorant | 1 | 0 | 21 | 3 | 1 | 26 | 21 | 5 | 8 (18 Oct) | 44 | 8 | 30 Aug | 2 Dec | ||||
| 77. | Short-eared Owl | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 5 Sep) | 6 | 1 | 5 Sep | 5 Sep | ||||
| 78. | Merlin | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (30 Aug) | 6 | 1 | 30 Aug | 30 Aug | ||||
| 79. | Peregrine | 1 | 0 | 1 | 0 | 0 | 2 | 2 | 0 | 1 (29 Aug) | 11 | 2 | 29 Aug | 15 Oct | ||||
| 80. | Skylark | 0 | 0 | 3 | 0 | 0 | 3 | 3 | 0 | 3 (11 Oct) | 6 | 1 | 11 Oct | 11 Oct | ||||
| 81. | Starling | 0 | 0 | 0 | 40 | 0 | 40 | 40 | 0 | 35 (20 Nov) | 11 | 2 | 20 Nov | 23 Nov | ||||
| 82. | Blackbird | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 (23 Nov) | 6 | 1 | 23 Nov | 23 Nov | ||||
| 83. | Fieldfare | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (15 Oct) | 6 | 1 | 15 Oct | 15 Oct | ||||
| 84. | Meadow Pipit | 0 | 0 | 3 | 0 | 0 | 3 | 3 | 0 | 3 (11 Oct) | 6 | 1 | 11 Oct | 11 Oct | ||||
| 85. | Rock Pipit | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (11 Oct) | 6 | 1 | 11 Oct | 11 Oct | ||||
| 86. | Redpoll | 0 | 0 | 3 | 0 | 0 | 3 | 3 | 0 | 3 (15 Oct) | 6 | 1 | 15 Oct | 15 Oct | ||||
| 87. | Lapland Bunting | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (11 Oct) | 6 | 1 | 11 Oct | 11 Oct | ||||
| Other species | ||||||||||||||||||
| Species | Aug | Sep | Oct | Nov | Dec | Totals | W | E | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Harbour Porpoise | 0 | 0 | 4 | 0 | 0 | 4 | 4 | 0 | 2 (26 Oct) | 17 | 3 | 24 Oct | 29 Oct | ||||
| Other species | ||||||||||||||||||
| Species | Aug | Sep | Oct | Nov | Dec | Totals | W | E | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | white sp. (butterfly) | 0 | 2 | 0 | 0 | 0 | 2 | 2 | 0 | 2 ( 2 Sep) | 6 | 1 | 2 Sep | 2 Sep | ||||
| Species | Aug | Sep | Oct | Nov | Dec | Totals | W | E | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 3384 | 1961 | 10789 | 1902 | 542 | 18578 | 16550 | 2028 | 100 | 18 | ||||||||
| Observation hours | 4:30 | 10:25 | 18:35 | 15:23 | 5:20 | 54:13 | ||||||||||||
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