Also present
Totals Bertusnol, Texel 2018
| Species | Mar | Apr | May | Jun | Jul | Aug | Totals | SW | NE | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Dark-bellied Brent Goose | 38 | 21 | 0 | 0 | 0 | 0 | 59 | 2 | 57 | 34 (27 Mar) | 23 | 3 | 27 Mar | 6 Apr | ||||
| 2. | Barnacle Goose | 0 | 26 | 27 | 0 | 0 | 0 | 53 | 8 | 45 | 21 ( 7 Apr) | 46 | 6 | 7 Apr | 27 May | ||||
| 3. | Branta sp. | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (27 May) | 8 | 1 | 27 May | 27 May | ||||
| 4. | Greylag Goose | 9 | 10 | 51 | 0 | 0 | 0 | 70 | 20 | 50 | 22 (21 May) | 62 | 8 | 27 Mar | 27 May | ||||
| 5. | Eurasian White-fronted Goose | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (27 Mar) | 8 | 1 | 27 Mar | 27 Mar | ||||
| 6. | Mute Swan | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 2 ( 7 Apr) | 8 | 1 | 7 Apr | 7 Apr | ||||
| 7. | Whooper Swan | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 7 Apr) | 8 | 1 | 7 Apr | 7 Apr | ||||
| 8. | Egyptian Goose | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (21 May) | 8 | 1 | 21 May | 21 May | ||||
| 9. | Shelduck | 0 | 13 | 5 | 0 | 0 | 0 | 18 | 2 | 16 | 11 ( 7 Apr) | 31 | 4 | 7 Apr | 22 May | ||||
| 10. | Shoveler | 0 | 12 | 2 | 0 | 0 | 0 | 14 | 8 | 6 | 12 ( 7 Apr) | 15 | 2 | 7 Apr | 27 May | ||||
| 11. | Gadwall | 0 | 0 | 4 | 0 | 0 | 3 | 7 | 3 | 4 | 4 (21 May) | 15 | 2 | 21 May | 29 Aug | ||||
| 12. | Wigeon | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (27 Mar) | 8 | 1 | 27 Mar | 27 Mar | ||||
| 13. | Mallard | 10 | 12 | 4 | 0 | 0 | 6 | 32 | 20 | 12 | 10 ( 7 Apr) | 62 | 8 | 27 Mar | 29 Aug | ||||
| 14. | Tufted Duck | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 2 (28 Apr) | 8 | 1 | 28 Apr | 28 Apr | ||||
| 15. | Scaup | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 7 Apr) | 8 | 1 | 7 Apr | 7 Apr | ||||
| 16. | Eider | 181 | 191 | 12 | 0 | 0 | 0 | 384 | 289 | 95 | 116 (27 Mar) | 69 | 9 | 27 Mar | 24 May | ||||
| 17. | Common Scoter | 759 | 4108 | 0 | 0 | 0 | 12 | 4879 | 4237 | 642 | 3791 ( 7 Apr) | 62 | 8 | 27 Mar | 29 Aug | ||||
| 18. | Long-tailed Duck | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (28 Apr) | 8 | 1 | 28 Apr | 28 Apr | ||||
| 19. | Goosander | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 7 Apr) | 8 | 1 | 7 Apr | 7 Apr | ||||
| 20. | Red-breasted Merganser | 0 | 9 | 0 | 0 | 0 | 0 | 9 | 6 | 3 | 9 ( 7 Apr) | 8 | 1 | 7 Apr | 7 Apr | ||||
| 21. | Swift | 0 | 0 | 646 | 0 | 0 | 3 | 649 | 8 | 641 | 275 (24 May) | 46 | 6 | 21 May | 29 Aug | ||||
| 22. | Feral Pigeon | 1 | 3 | 33 | 0 | 0 | 0 | 37 | 1 | 36 | 17 (21 May) | 38 | 5 | 31 Mar | 27 May | ||||
| 23. | Stock Dove | 5 | 0 | 0 | 0 | 0 | 0 | 5 | 2 | 3 | 3 (27 Mar) | 15 | 2 | 27 Mar | 31 Mar | ||||
| 24. | Woodpigeon | 112 | 138 | 199 | 0 | 0 | 0 | 449 | 34 | 415 | 131 (21 May) | 77 | 10 | 27 Mar | 27 May | ||||
| 25. | Collared Dove | 3 | 0 | 5 | 0 | 0 | 0 | 8 | 3 | 5 | 3 (31 Mar) | 31 | 4 | 31 Mar | 27 May | ||||
| 26. | Oystercatcher | 45 | 17 | 20 | 0 | 0 | 0 | 82 | 58 | 24 | 19 (30 Mar) | 69 | 9 | 27 Mar | 27 May | ||||
| 27. | Grey Plover | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (22 May) | 8 | 1 | 22 May | 22 May | ||||
| 28. | Golden Plover | 0 | 0 | 0 | 0 | 0 | 60 | 60 | 60 | 0 | 60 (29 Aug) | 8 | 1 | 29 Aug | 29 Aug | ||||
| 29. | Dotterel | 0 | 0 | 4 | 0 | 0 | 0 | 4 | 0 | 4 | 3 (25 May) | 15 | 2 | 24 May | 25 May | ||||
| 30. | Ringed Plover | 0 | 0 | 4 | 0 | 0 | 14 | 18 | 14 | 4 | 14 (29 Aug) | 15 | 2 | 25 May | 29 Aug | ||||
| Species | Mar | Apr | May | Jun | Jul | Aug | Totals | SW | NE | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Lapwing | 0 | 6 | 21 | 0 | 0 | 0 | 27 | 5 | 22 | 12 (27 May) | 62 | 8 | 7 Apr | 27 May | ||||
| 32. | Whimbrel | 0 | 5 | 2 | 0 | 0 | 8 | 15 | 8 | 7 | 8 (29 Aug) | 23 | 3 | 7 Apr | 29 Aug | ||||
| 33. | Curlew | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (25 May) | 8 | 1 | 25 May | 25 May | ||||
| 34. | Bar-tailed Godwit | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (21 May) | 8 | 1 | 21 May | 21 May | ||||
| 35. | Black-tailed Godwit | 0 | 0 | 5 | 0 | 0 | 0 | 5 | 0 | 5 | 5 (21 May) | 8 | 1 | 21 May | 21 May | ||||
| 36. | Snipe | 0 | 1 | 0 | 0 | 0 | 49 | 50 | 46 | 4 | 49 (29 Aug) | 15 | 2 | 7 Apr | 29 Aug | ||||
| 37. | Green Sandpiper | 0 | 0 | 0 | 0 | 0 | 11 | 11 | 11 | 0 | 11 (29 Aug) | 8 | 1 | 29 Aug | 29 Aug | ||||
| 38. | Redshank | 0 | 5 | 3 | 0 | 0 | 0 | 8 | 2 | 6 | 5 ( 7 Apr) | 23 | 3 | 7 Apr | 24 May | ||||
| 39. | Spotted Redshank | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 (29 Aug) | 8 | 1 | 29 Aug | 29 Aug | ||||
| 40. | Greenshank | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (27 May) | 8 | 1 | 27 May | 27 May | ||||
| 41. | Turnstone | 0 | 0 | 3 | 0 | 0 | 0 | 3 | 0 | 3 | 3 (21 May) | 8 | 1 | 21 May | 21 May | ||||
| 42. | wader sp. | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 2 | 1 (21 May) | 15 | 2 | 21 May | 25 May | ||||
| 43. | Sanderling | 0 | 0 | 14 | 0 | 0 | 0 | 14 | 0 | 14 | 9 (21 May) | 15 | 2 | 21 May | 27 May | ||||
| 44. | Little Tern | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (27 May) | 8 | 1 | 27 May | 27 May | ||||
| 45. | Common/Arctic Tern | 0 | 0 | 6 | 0 | 0 | 0 | 6 | 0 | 6 | 6 (27 May) | 8 | 1 | 27 May | 27 May | ||||
| 46. | Common Tern | 0 | 4 | 9 | 0 | 0 | 0 | 13 | 2 | 11 | 9 (21 May) | 15 | 2 | 28 Apr | 21 May | ||||
| 47. | Sandwich Tern | 140 | 95 | 0 | 0 | 0 | 0 | 235 | 28 | 207 | 107 (31 Mar) | 38 | 5 | 27 Mar | 21 Apr | ||||
| 48. | Little Gull | 1 | 8 | 0 | 0 | 0 | 0 | 9 | 6 | 3 | 8 ( 6 Apr) | 15 | 2 | 31 Mar | 6 Apr | ||||
| 49. | Black-headed Gull | 30 | 18 | 22 | 0 | 0 | 125 | 195 | 156 | 39 | 125 (29 Aug) | 77 | 10 | 27 Mar | 29 Aug | ||||
| 50. | Mediterranean Gull | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 2 (31 Mar) | 8 | 1 | 31 Mar | 31 Mar | ||||
| 51. | Caspian Gull | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (30 Mar) | 8 | 1 | 30 Mar | 30 Mar | ||||
| 52. | Great Black-backed Gull | 4 | 4 | 3 | 0 | 0 | 0 | 11 | 1 | 10 | 2 (30 Mar) | 62 | 8 | 30 Mar | 27 May | ||||
| 53. | Lesser Black-backed Gull | 0 | 0 | 0 | 0 | 0 | 10 | 10 | 10 | 0 | 10 (29 Aug) | 8 | 1 | 29 Aug | 29 Aug | ||||
| 54. | skua sp. | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 (29 Aug) | 8 | 1 | 29 Aug | 29 Aug | ||||
| 55. | Red-throated Diver | 3 | 5 | 0 | 0 | 0 | 0 | 8 | 4 | 4 | 4 ( 7 Apr) | 31 | 4 | 27 Mar | 21 Apr | ||||
| 56. | Black Stork | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (21 May) | 8 | 1 | 21 May | 21 May | ||||
| 57. | Gannet | 10 | 128 | 12 | 0 | 0 | 0 | 150 | 60 | 90 | 127 ( 7 Apr) | 46 | 6 | 27 Mar | 27 May | ||||
| 58. | Spoonbill | 0 | 1 | 17 | 0 | 0 | 0 | 18 | 1 | 17 | 12 (21 May) | 31 | 4 | 6 Apr | 25 May | ||||
| 59. | Little Egret | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (21 Apr) | 8 | 1 | 21 Apr | 21 Apr | ||||
| 60. | Grey Heron | 2 | 5 | 12 | 0 | 0 | 4 | 23 | 5 | 18 | 5 (21 May) | 69 | 9 | 30 Mar | 29 Aug | ||||
| Species | Mar | Apr | May | Jun | Jul | Aug | Totals | SW | NE | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Osprey | 0 | 0 | 13 | 0 | 0 | 0 | 13 | 0 | 13 | 6 (21 May) | 31 | 4 | 21 May | 27 May | ||||
| 62. | Honey Buzzard | 0 | 0 | 13 | 0 | 0 | 0 | 13 | 1 | 12 | 11 (27 May) | 23 | 3 | 22 May | 27 May | ||||
| 63. | Greater Spotted Eagle | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (27 May) | 8 | 1 | 27 May | 27 May | ||||
| 64. | Sparrowhawk | 0 | 2 | 2 | 0 | 0 | 0 | 4 | 1 | 3 | 2 ( 7 Apr) | 23 | 3 | 7 Apr | 27 May | ||||
| 65. | Marsh Harrier | 7 | 6 | 9 | 0 | 0 | 0 | 22 | 5 | 17 | 6 ( 7 Apr) | 54 | 7 | 27 Mar | 25 May | ||||
| 66. | Common Buzzard | 0 | 3 | 7 | 0 | 0 | 0 | 10 | 0 | 10 | 6 (21 May) | 23 | 3 | 7 Apr | 27 May | ||||
| 67. | Short-eared Owl | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (21 May) | 8 | 1 | 21 May | 21 May | ||||
| 68. | European Bee-eater | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (21 May) | 8 | 1 | 21 May | 21 May | ||||
| 69. | Great Spotted Woodpecker | 1 | 0 | 5 | 0 | 0 | 0 | 6 | 3 | 3 | 2 (25 May) | 38 | 5 | 27 Mar | 25 May | ||||
| 70. | Kestrel | 0 | 1 | 13 | 0 | 0 | 0 | 14 | 0 | 14 | 7 (21 May) | 38 | 5 | 7 Apr | 27 May | ||||
| 71. | Hobby | 0 | 0 | 3 | 0 | 0 | 1 | 4 | 1 | 3 | 3 (27 May) | 15 | 2 | 27 May | 29 Aug | ||||
| 72. | Golden Oriole | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (21 May) | 8 | 1 | 21 May | 21 May | ||||
| 73. | Jay | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (24 May) | 8 | 1 | 24 May | 24 May | ||||
| 74. | Magpie | 12 | 7 | 3 | 0 | 0 | 0 | 22 | 4 | 18 | 10 (31 Mar) | 31 | 4 | 27 Mar | 21 May | ||||
| 75. | Jackdaw | 7 | 5 | 0 | 0 | 0 | 0 | 12 | 2 | 10 | 7 (31 Mar) | 23 | 3 | 31 Mar | 21 Apr | ||||
| 76. | Carrion Crow | 8 | 0 | 0 | 0 | 0 | 0 | 8 | 7 | 1 | 8 (27 Mar) | 8 | 1 | 27 Mar | 27 Mar | ||||
| 77. | Blue Tit | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 2 (30 Mar) | 8 | 1 | 30 Mar | 30 Mar | ||||
| 78. | Wood Lark | 6 | 7 | 1 | 0 | 0 | 1 | 15 | 3 | 12 | 7 ( 7 Apr) | 38 | 5 | 27 Mar | 29 Aug | ||||
| 79. | Skylark | 3 | 2 | 0 | 0 | 0 | 0 | 5 | 0 | 5 | 3 (27 Mar) | 15 | 2 | 27 Mar | 7 Apr | ||||
| 80. | Sand Martin | 0 | 1 | 65 | 0 | 0 | 5 | 71 | 7 | 64 | 43 (21 May) | 54 | 7 | 6 Apr | 29 Aug | ||||
| 81. | Swallow | 0 | 18 | 715 | 0 | 0 | 64 | 797 | 132 | 665 | 326 (21 May) | 62 | 8 | 7 Apr | 29 Aug | ||||
| 82. | House Martin | 0 | 0 | 352 | 0 | 0 | 0 | 352 | 8 | 344 | 127 (25 May) | 38 | 5 | 21 May | 27 May | ||||
| 83. | Chiffchaff/Willow Warbler | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (21 May) | 8 | 1 | 21 May | 21 May | ||||
| 84. | Starling | 99 | 93 | 13 | 0 | 0 | 0 | 205 | 22 | 183 | 84 ( 7 Apr) | 69 | 9 | 27 Mar | 27 May | ||||
| 85. | Song Thrush | 66 | 35 | 0 | 0 | 0 | 0 | 101 | 87 | 14 | 65 (31 Mar) | 23 | 3 | 27 Mar | 7 Apr | ||||
| 86. | Redwing | 54 | 1 | 0 | 0 | 0 | 0 | 55 | 54 | 1 | 51 (27 Mar) | 23 | 3 | 27 Mar | 28 Apr | ||||
| 87. | Ring Ouzel | 0 | 4 | 0 | 0 | 0 | 0 | 4 | 0 | 4 | 4 ( 7 Apr) | 8 | 1 | 7 Apr | 7 Apr | ||||
| 88. | Spotted Flycatcher | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (22 May) | 8 | 1 | 22 May | 22 May | ||||
| 89. | Stonechat | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 ( 7 Apr) | 8 | 1 | 7 Apr | 7 Apr | ||||
| 90. | Dunnock | 0 | 6 | 0 | 0 | 0 | 0 | 6 | 0 | 6 | 3 ( 7 Apr) | 15 | 2 | 7 Apr | 21 Apr | ||||
| Species | Mar | Apr | May | Jun | Jul | Aug | Totals | SW | NE | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 91. | Blue-headed Wagtail | 0 | 3 | 1 | 0 | 0 | 0 | 4 | 0 | 4 | 3 ( 7 Apr) | 15 | 2 | 7 Apr | 25 May | ||||
| 92. | Grey-headed Wagtail | 0 | 0 | 24 | 0 | 0 | 0 | 24 | 0 | 24 | 23 (25 May) | 15 | 2 | 21 May | 25 May | ||||
| 93. | Yellow wagtail sp. | 0 | 16 | 35 | 0 | 0 | 109 | 160 | 95 | 65 | 109 (29 Aug) | 62 | 8 | 7 Apr | 29 Aug | ||||
| 94. | Grey Wagtail | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 2 | 1 (21 May) | 15 | 2 | 21 May | 25 May | ||||
| 95. | White Wagtail | 0 | 0 | 8 | 0 | 0 | 0 | 8 | 0 | 8 | 3 (27 May) | 31 | 4 | 21 May | 27 May | ||||
| 96. | alba wagtail sp. | 22 | 60 | 10 | 0 | 0 | 8 | 100 | 34 | 66 | 57 ( 7 Apr) | 85 | 11 | 27 Mar | 29 Aug | ||||
| 97. | Tawny Pipit | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 (29 Aug) | 8 | 1 | 29 Aug | 29 Aug | ||||
| 98. | Meadow Pipit | 6 | 70 | 1 | 0 | 0 | 0 | 77 | 5 | 72 | 49 ( 7 Apr) | 54 | 7 | 27 Mar | 22 May | ||||
| 99. | Tree Pipit | 0 | 5 | 67 | 0 | 0 | 0 | 72 | 0 | 72 | 49 (25 May) | 46 | 6 | 7 Apr | 27 May | ||||
| 100. | Chaffinch | 4 | 3 | 2 | 0 | 0 | 1 | 10 | 6 | 4 | 4 (27 Mar) | 46 | 6 | 27 Mar | 29 Aug | ||||
| 101. | Brambling | 5 | 12 | 0 | 0 | 0 | 0 | 17 | 5 | 12 | 12 ( 7 Apr) | 15 | 2 | 27 Mar | 7 Apr | ||||
| 102. | Greenfinch | 1 | 12 | 5 | 0 | 0 | 3 | 21 | 3 | 18 | 12 ( 7 Apr) | 38 | 5 | 31 Mar | 29 Aug | ||||
| 103. | Linnet | 44 | 120 | 26 | 0 | 0 | 0 | 190 | 34 | 156 | 96 ( 7 Apr) | 77 | 10 | 27 Mar | 27 May | ||||
| 104. | Lesser Redpoll | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (22 May) | 8 | 1 | 22 May | 22 May | ||||
| 105. | redpoll sp. | 3 | 0 | 1 | 0 | 0 | 0 | 4 | 0 | 4 | 3 (27 Mar) | 15 | 2 | 27 Mar | 25 May | ||||
| 106. | Goldfinch | 1 | 0 | 13 | 0 | 0 | 2 | 16 | 3 | 13 | 6 (27 May) | 46 | 6 | 31 Mar | 29 Aug | ||||
| 107. | Serin | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (22 May) | 8 | 1 | 22 May | 22 May | ||||
| 108. | Siskin | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 1 | 1 | 1 (27 Mar) | 15 | 2 | 27 Mar | 7 Apr | ||||
| 109. | Ortolan Bunting | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 (29 Aug) | 8 | 1 | 29 Aug | 29 Aug | ||||
| 110. | Reed Bunting | 1 | 3 | 1 | 0 | 0 | 0 | 5 | 0 | 5 | 2 ( 7 Apr) | 31 | 4 | 31 Mar | 24 May | ||||
| Species | Mar | Apr | May | Jun | Jul | Aug | Totals | SW | NE | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 1711 | 5351 | 2574 | 0 | 0 | 503 | 10139 | 5661 | 4478 | 100 | 13 | ||||||||
| Observation hours | 5:15 | 8:45 | 34:20 | 0:00 | 0:00 | 4:30 | 52:50 | ||||||||||||
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