Also present
Totals Afsluitdijk, Den Oever 2025
| Species | Feb | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Dark-bellied Brent Goose | 9 | 14 | 75 | 98 | 41 | 57 | 22 (12 Apr) | 61 | 14 | 21 Feb | 29 Apr | ||||
| 2. | Barnacle Goose | 28 | 1485 | 1038 | 2551 | 68 | 2483 | 779 (23 Mar) | 87 | 20 | 21 Feb | 30 Apr | ||||
| 3. | Greylag Goose | 24 | 151 | 221 | 396 | 21 | 375 | 80 (19 Mar) | 91 | 21 | 21 Feb | 30 Apr | ||||
| 4. | Anser sp. | 0 | 176 | 0 | 176 | 0 | 176 | 146 (19 Mar) | 9 | 2 | 19 Mar | 20 Mar | ||||
| 5. | Pink-footed Goose | 0 | 15 | 0 | 15 | 0 | 15 | 15 (19 Mar) | 4 | 1 | 19 Mar | 19 Mar | ||||
| 6. | Tundra Bean Goose | 2 | 0 | 0 | 2 | 0 | 2 | 2 (21 Feb) | 4 | 1 | 21 Feb | 21 Feb | ||||
| 7. | Mute Swan | 0 | 0 | 7 | 7 | 2 | 5 | 4 (30 Apr) | 13 | 3 | 7 Apr | 30 Apr | ||||
| 8. | Egyptian Goose | 0 | 20 | 82 | 102 | 2 | 100 | 23 (30 Apr) | 52 | 12 | 19 Mar | 30 Apr | ||||
| 9. | Shelduck | 2 | 101 | 330 | 433 | 57 | 376 | 48 ( 6 Mar) | 87 | 20 | 21 Feb | 30 Apr | ||||
| 10. | Garganey | 0 | 3 | 0 | 3 | 0 | 3 | 2 (19 Mar) | 9 | 2 | 19 Mar | 23 Mar | ||||
| 11. | Shoveler | 0 | 130 | 56 | 186 | 0 | 186 | 100 (22 Mar) | 39 | 9 | 19 Mar | 27 Apr | ||||
| 12. | Gadwall | 2 | 20 | 43 | 65 | 0 | 65 | 11 ( 2 Apr) | 61 | 14 | 21 Feb | 30 Apr | ||||
| 13. | Wigeon | 3 | 60 | 11 | 74 | 0 | 74 | 32 (22 Mar) | 26 | 6 | 21 Feb | 7 Apr | ||||
| 14. | Mallard | 0 | 0 | 4 | 4 | 0 | 4 | 2 ( 2 Apr) | 13 | 3 | 2 Apr | 26 Apr | ||||
| 15. | Pintail | 0 | 2 | 4 | 6 | 0 | 6 | 4 ( 5 Apr) | 9 | 2 | 22 Mar | 5 Apr | ||||
| 16. | Teal | 0 | 57 | 22 | 79 | 0 | 79 | 38 (23 Mar) | 26 | 6 | 19 Mar | 29 Apr | ||||
| 17. | Red-crested Pochard | 0 | 4 | 0 | 4 | 0 | 4 | 4 (22 Mar) | 4 | 1 | 22 Mar | 22 Mar | ||||
| 18. | Pochard | 0 | 1 | 0 | 1 | 0 | 1 | 1 ( 9 Mar) | 4 | 1 | 9 Mar | 9 Mar | ||||
| 19. | Tufted Duck | 1 | 23 | 36 | 60 | 0 | 60 | 10 (23 Mar) | 43 | 10 | 21 Feb | 30 Apr | ||||
| 20. | Scaup | 0 | 2 | 5 | 7 | 0 | 7 | 3 ( 5 Apr) | 17 | 4 | 19 Mar | 5 Apr | ||||
| 21. | Common Scoter | 0 | 2 | 3 | 5 | 0 | 5 | 2 (22 Mar) | 17 | 4 | 22 Mar | 15 Apr | ||||
| 22. | Goldeneye | 0 | 1 | 1 | 2 | 0 | 2 | 1 (22 Mar) | 9 | 2 | 22 Mar | 15 Apr | ||||
| 23. | Goosander | 3 | 6 | 0 | 9 | 0 | 9 | 4 (23 Mar) | 13 | 3 | 25 Feb | 23 Mar | ||||
| 24. | Red-breasted Merganser | 8 | 38 | 69 | 115 | 5 | 110 | 29 ( 2 Apr) | 52 | 12 | 21 Feb | 27 Apr | ||||
| 25. | Swift | 0 | 0 | 66 | 66 | 0 | 66 | 23 (30 Apr) | 26 | 6 | 23 Apr | 30 Apr | ||||
| 26. | Stock Dove | 9 | 9 | 11 | 29 | 4 | 25 | 9 (21 Feb) | 43 | 10 | 21 Feb | 29 Apr | ||||
| 27. | Woodpigeon | 0 | 156 | 31 | 187 | 2 | 185 | 100 (19 Mar) | 43 | 10 | 6 Mar | 30 Apr | ||||
| 28. | Collared Dove | 0 | 1 | 18 | 19 | 0 | 19 | 7 (29 Apr) | 22 | 5 | 20 Mar | 29 Apr | ||||
| 29. | Great Crested Grebe | 1 | 1 | 22 | 24 | 0 | 24 | 13 ( 2 Apr) | 26 | 6 | 21 Feb | 26 Apr | ||||
| 30. | Oystercatcher | 7 | 45 | 525 | 577 | 6 | 571 | 126 (28 Apr) | 83 | 19 | 21 Feb | 30 Apr | ||||
| Species | Feb | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Avocet | 0 | 60 | 115 | 175 | 0 | 175 | 41 (19 Mar) | 65 | 15 | 19 Mar | 30 Apr | ||||
| 32. | Grey Plover | 0 | 0 | 56 | 56 | 0 | 56 | 26 (29 Apr) | 26 | 6 | 25 Apr | 30 Apr | ||||
| 33. | Golden Plover | 0 | 57 | 48 | 105 | 0 | 105 | 50 (23 Mar) | 22 | 5 | 22 Mar | 30 Apr | ||||
| 34. | Ringed Plover | 0 | 63 | 34 | 97 | 0 | 97 | 52 (22 Mar) | 30 | 7 | 19 Mar | 30 Apr | ||||
| 35. | Little Ringed Plover | 0 | 0 | 4 | 4 | 0 | 4 | 1 (23 Apr) | 17 | 4 | 23 Apr | 30 Apr | ||||
| 36. | Lapwing | 49 | 18 | 2 | 69 | 45 | 24 | 45 (25 Feb) | 26 | 6 | 21 Feb | 26 Apr | ||||
| 37. | Whimbrel | 0 | 1 | 318 | 319 | 0 | 319 | 81 (27 Apr) | 65 | 15 | 23 Mar | 30 Apr | ||||
| 38. | Curlew | 0 | 16 | 52 | 68 | 6 | 62 | 24 (12 Apr) | 61 | 14 | 6 Mar | 30 Apr | ||||
| 39. | Bar-tailed Godwit | 0 | 0 | 840 | 840 | 0 | 840 | 419 (28 Apr) | 30 | 7 | 23 Apr | 30 Apr | ||||
| 40. | Black-tailed Godwit | 0 | 52 | 1 | 53 | 5 | 48 | 26 (22 Mar) | 22 | 5 | 6 Mar | 4 Apr | ||||
| 41. | Green Sandpiper | 0 | 0 | 9 | 9 | 0 | 9 | 7 (27 Apr) | 13 | 3 | 27 Apr | 30 Apr | ||||
| 42. | Wood Sandpiper | 0 | 0 | 2 | 2 | 0 | 2 | 1 (29 Apr) | 9 | 2 | 29 Apr | 30 Apr | ||||
| 43. | Redshank | 0 | 18 | 186 | 204 | 1 | 203 | 69 (26 Apr) | 52 | 12 | 6 Mar | 30 Apr | ||||
| 44. | Spotted Redshank | 0 | 0 | 10 | 10 | 0 | 10 | 10 (25 Apr) | 4 | 1 | 25 Apr | 25 Apr | ||||
| 45. | Greenshank | 0 | 0 | 85 | 85 | 0 | 85 | 36 (26 Apr) | 30 | 7 | 19 Apr | 30 Apr | ||||
| 46. | Turnstone | 0 | 5 | 2 | 7 | 0 | 7 | 3 (23 Mar) | 17 | 4 | 6 Mar | 19 Apr | ||||
| 47. | Knot | 0 | 692 | 72 | 764 | 0 | 764 | 670 (19 Mar) | 26 | 6 | 19 Mar | 29 Apr | ||||
| 48. | Ruff | 0 | 10 | 124 | 134 | 0 | 134 | 61 (30 Apr) | 39 | 9 | 9 Mar | 30 Apr | ||||
| 49. | wader sp. | 0 | 0 | 34 | 34 | 0 | 34 | 30 (30 Apr) | 9 | 2 | 26 Apr | 30 Apr | ||||
| 50. | Sanderling | 0 | 0 | 5 | 5 | 0 | 5 | 5 (30 Apr) | 4 | 1 | 30 Apr | 30 Apr | ||||
| 51. | Dunlin | 0 | 533 | 70 | 603 | 0 | 603 | 300 (19 Mar) | 43 | 10 | 19 Mar | 30 Apr | ||||
| 52. | Little Tern | 0 | 0 | 2 | 2 | 0 | 2 | 2 (28 Apr) | 4 | 1 | 28 Apr | 28 Apr | ||||
| 53. | Gull-billed Tern | 0 | 0 | 2 | 2 | 0 | 2 | 2 (12 Apr) | 4 | 1 | 12 Apr | 12 Apr | ||||
| 54. | Black Tern | 0 | 0 | 41 | 41 | 0 | 41 | 20 (30 Apr) | 22 | 5 | 15 Apr | 30 Apr | ||||
| 55. | Common/Arctic Tern | 0 | 0 | 2 | 2 | 0 | 2 | 2 (23 Apr) | 4 | 1 | 23 Apr | 23 Apr | ||||
| 56. | Common Tern | 0 | 0 | 894 | 894 | 3 | 891 | 647 (23 Apr) | 48 | 11 | 4 Apr | 30 Apr | ||||
| 57. | Sandwich Tern | 0 | 0 | 52 | 52 | 0 | 52 | 26 (23 Apr) | 22 | 5 | 12 Apr | 27 Apr | ||||
| 58. | Little Gull | 0 | 0 | 897 | 897 | 1 | 896 | 268 (27 Apr) | 43 | 10 | 12 Apr | 30 Apr | ||||
| 59. | Black-headed Gull | 96 | 5272 | 1035 | 6403 | 0 | 6403 | 3965 (23 Mar) | 87 | 20 | 21 Feb | 30 Apr | ||||
| 60. | Mediterranean Gull | 0 | 3 | 23 | 26 | 2 | 24 | 10 (23 Apr) | 35 | 8 | 23 Mar | 30 Apr | ||||
| Species | Feb | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Common Gull | 2 | 556 | 78 | 636 | 0 | 636 | 456 (23 Mar) | 78 | 18 | 21 Feb | 30 Apr | ||||
| 62. | Caspian Gull | 0 | 9 | 1 | 10 | 0 | 10 | 6 (23 Mar) | 13 | 3 | 22 Mar | 4 Apr | ||||
| 63. | Herring Gull | 3 | 54 | 39 | 96 | 0 | 96 | 44 (23 Mar) | 52 | 12 | 21 Feb | 30 Apr | ||||
| 64. | Great Black-backed Gull | 0 | 5 | 11 | 16 | 0 | 16 | 5 (23 Mar) | 30 | 7 | 23 Mar | 30 Apr | ||||
| 65. | Lesser Black-backed Gull | 4 | 558 | 167 | 729 | 2 | 727 | 314 (23 Mar) | 87 | 20 | 21 Feb | 30 Apr | ||||
| 66. | Red-throated Diver | 0 | 2 | 2 | 4 | 0 | 4 | 1 (22 Mar) | 17 | 4 | 22 Mar | 12 Apr | ||||
| 67. | Cormorant | 36 | 76 | 668 | 780 | 0 | 780 | 223 (30 Apr) | 83 | 19 | 21 Feb | 30 Apr | ||||
| 68. | Spoonbill | 0 | 36 | 35 | 71 | 1 | 70 | 36 (23 Mar) | 26 | 6 | 23 Mar | 27 Apr | ||||
| 69. | Little Egret | 0 | 1 | 0 | 1 | 1 | 0 | 1 (20 Mar) | 4 | 1 | 20 Mar | 20 Mar | ||||
| 70. | Great White Egret | 1 | 4 | 23 | 28 | 6 | 22 | 6 ( 4 Apr) | 48 | 11 | 25 Feb | 28 Apr | ||||
| 71. | Grey Heron | 0 | 66 | 64 | 130 | 0 | 130 | 51 (23 Mar) | 70 | 16 | 9 Mar | 30 Apr | ||||
| 72. | Osprey | 0 | 0 | 1 | 1 | 0 | 1 | 1 (19 Apr) | 4 | 1 | 19 Apr | 19 Apr | ||||
| 73. | Sparrowhawk | 0 | 3 | 7 | 10 | 0 | 10 | 3 (30 Apr) | 26 | 6 | 22 Mar | 30 Apr | ||||
| 74. | Marsh Harrier | 0 | 8 | 14 | 22 | 0 | 22 | 4 (22 Mar) | 48 | 11 | 19 Mar | 30 Apr | ||||
| 75. | Hen Harrier | 0 | 0 | 1 | 1 | 0 | 1 | 1 (30 Apr) | 4 | 1 | 30 Apr | 30 Apr | ||||
| 76. | Red Kite | 0 | 0 | 1 | 1 | 0 | 1 | 1 (23 Apr) | 4 | 1 | 23 Apr | 23 Apr | ||||
| 77. | White-tailed Eagle | 0 | 1 | 0 | 1 | 0 | 1 | 1 (19 Mar) | 4 | 1 | 19 Mar | 19 Mar | ||||
| 78. | Middle Spotted Woodpecker | 0 | 0 | 1 | 1 | 0 | 1 | 1 (23 Apr) | 4 | 1 | 23 Apr | 23 Apr | ||||
| 79. | Kestrel | 0 | 6 | 6 | 12 | 0 | 12 | 6 (23 Mar) | 22 | 5 | 23 Mar | 27 Apr | ||||
| 80. | Merlin | 0 | 0 | 3 | 3 | 0 | 3 | 1 ( 5 Apr) | 13 | 3 | 5 Apr | 30 Apr | ||||
| 81. | Peregrine | 0 | 0 | 1 | 1 | 0 | 1 | 1 (29 Apr) | 4 | 1 | 29 Apr | 29 Apr | ||||
| 82. | Jay | 0 | 0 | 2 | 2 | 0 | 2 | 1 (23 Apr) | 9 | 2 | 23 Apr | 26 Apr | ||||
| 83. | Magpie | 0 | 60 | 68 | 128 | 9 | 119 | 32 ( 4 Apr) | 57 | 13 | 6 Mar | 28 Apr | ||||
| 84. | Jackdaw | 15 | 190 | 143 | 348 | 4 | 344 | 53 ( 6 Mar) | 91 | 21 | 21 Feb | 30 Apr | ||||
| 85. | Rook | 0 | 1 | 1 | 2 | 0 | 2 | 1 (23 Mar) | 9 | 2 | 23 Mar | 4 Apr | ||||
| 86. | Carrion Crow | 0 | 77 | 249 | 326 | 1 | 325 | 58 ( 4 Apr) | 87 | 20 | 6 Mar | 30 Apr | ||||
| 87. | Great Tit | 0 | 2 | 0 | 2 | 0 | 2 | 2 ( 9 Mar) | 4 | 1 | 9 Mar | 9 Mar | ||||
| 88. | Skylark | 26 | 15 | 1 | 42 | 0 | 42 | 26 (21 Feb) | 17 | 4 | 21 Feb | 4 Apr | ||||
| 89. | Sand Martin | 0 | 1 | 46 | 47 | 3 | 44 | 25 (15 Apr) | 39 | 9 | 22 Mar | 30 Apr | ||||
| 90. | Swallow | 0 | 0 | 168 | 168 | 6 | 162 | 41 (27 Apr) | 57 | 13 | 2 Apr | 30 Apr | ||||
| Species | Feb | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 91. | House Martin | 0 | 0 | 4 | 4 | 0 | 4 | 2 (23 Apr) | 9 | 2 | 23 Apr | 30 Apr | ||||
| 92. | Goldcrest | 0 | 5 | 0 | 5 | 2 | 3 | 3 (22 Mar) | 9 | 2 | 22 Mar | 23 Mar | ||||
| 93. | Starling | 44 | 6438 | 76 | 6558 | 34 | 6524 | 4620 (22 Mar) | 87 | 20 | 21 Feb | 28 Apr | ||||
| 94. | Song Thrush | 0 | 0 | 2 | 2 | 0 | 2 | 2 (12 Apr) | 4 | 1 | 12 Apr | 12 Apr | ||||
| 95. | Blackbird | 0 | 1 | 1 | 2 | 0 | 2 | 1 (23 Mar) | 9 | 2 | 23 Mar | 30 Apr | ||||
| 96. | Fieldfare | 0 | 2 | 0 | 2 | 0 | 2 | 2 ( 9 Mar) | 4 | 1 | 9 Mar | 9 Mar | ||||
| 97. | Blue-headed Wagtail | 0 | 0 | 10 | 10 | 0 | 10 | 7 (12 Apr) | 13 | 3 | 4 Apr | 12 Apr | ||||
| 98. | Yellow wagtail sp. | 0 | 0 | 48 | 48 | 0 | 48 | 28 (15 Apr) | 35 | 8 | 12 Apr | 30 Apr | ||||
| 99. | Grey Wagtail | 0 | 5 | 0 | 5 | 0 | 5 | 3 (22 Mar) | 9 | 2 | 22 Mar | 23 Mar | ||||
| 100. | White Wagtail | 3 | 136 | 82 | 221 | 0 | 221 | 77 (22 Mar) | 78 | 18 | 21 Feb | 30 Apr | ||||
| 101. | alba wagtail sp. | 0 | 33 | 7 | 40 | 0 | 40 | 33 (23 Mar) | 26 | 6 | 23 Mar | 30 Apr | ||||
| 102. | Pied Wagtail | 0 | 1 | 0 | 1 | 0 | 1 | 1 (23 Mar) | 4 | 1 | 23 Mar | 23 Mar | ||||
| 103. | Meadow Pipit | 14 | 340 | 1466 | 1820 | 0 | 1820 | 521 ( 4 Apr) | 96 | 22 | 21 Feb | 30 Apr | ||||
| 104. | Tree Pipit | 0 | 0 | 9 | 9 | 0 | 9 | 4 (15 Apr) | 22 | 5 | 12 Apr | 28 Apr | ||||
| 105. | Rock Pipit | 2 | 18 | 8 | 28 | 0 | 28 | 8 (23 Mar) | 43 | 10 | 21 Feb | 12 Apr | ||||
| 106. | Chaffinch | 0 | 20 | 1 | 21 | 1 | 20 | 16 ( 9 Mar) | 17 | 4 | 9 Mar | 4 Apr | ||||
| 107. | Brambling | 0 | 0 | 4 | 4 | 0 | 4 | 3 ( 4 Apr) | 9 | 2 | 4 Apr | 12 Apr | ||||
| 108. | Greenfinch | 0 | 5 | 7 | 12 | 0 | 12 | 4 (22 Mar) | 35 | 8 | 19 Mar | 30 Apr | ||||
| 109. | Linnet | 0 | 19 | 279 | 298 | 0 | 298 | 55 (27 Apr) | 74 | 17 | 20 Mar | 30 Apr | ||||
| 110. | Goldfinch | 0 | 4 | 14 | 18 | 1 | 17 | 3 (12 Apr) | 52 | 12 | 9 Mar | 30 Apr | ||||
| 111. | Siskin | 0 | 4 | 3 | 7 | 0 | 7 | 4 (23 Mar) | 13 | 3 | 23 Mar | 27 Apr | ||||
| 112. | Lapland Bunting | 0 | 1 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 4 | 1 | 22 Mar | 22 Mar | ||||
| 113. | Reed Bunting | 0 | 5 | 2 | 7 | 0 | 7 | 3 ( 9 Mar) | 22 | 5 | 6 Mar | 19 Apr | ||||
| 114. | passerine sp. | 0 | 0 | 1 | 1 | 0 | 1 | 1 (27 Apr) | 4 | 1 | 27 Apr | 27 Apr | ||||
| Other species | ||||||||||||||||
| Species | Feb | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Bumblebee sp. | 0 | 0 | 3 | 3 | 0 | 3 | 2 ( 4 Apr) | 9 | 2 | 4 Apr | 12 Apr | ||||
| Species | Feb | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 394 | 18091 | 11525 | 30010 | 342 | 29668 | 100 | 23 | ||||||||
| Observation hours | 4:29 | 18:22 | 42:32 | 65:23 | ||||||||||||
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