Also present
Totals Westerslag, Texel 2025
| Species | Jan | Feb | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Dark-bellied Brent Goose | 5 | 48 | 497 | 3 | 7 | 560 | 3 | 557 | 215 (20 Mar) | 42 | 15 | 4 Jan | 1 May | ||||
| 2. | Barnacle Goose | 0 | 35 | 4 | 1 | 0 | 40 | 2 | 38 | 35 ( 6 Feb) | 8 | 3 | 6 Feb | 19 Apr | ||||
| 3. | Greylag Goose | 36 | 14 | 262 | 13 | 43 | 368 | 139 | 229 | 51 ( 8 Mar) | 53 | 19 | 16 Jan | 10 May | ||||
| 4. | Tundra Bean Goose | 0 | 0 | 29 | 0 | 0 | 29 | 0 | 29 | 29 (13 Mar) | 3 | 1 | 13 Mar | 13 Mar | ||||
| 5. | Egyptian Goose | 0 | 32 | 165 | 24 | 8 | 229 | 40 | 189 | 36 (20 Mar) | 58 | 21 | 1 Feb | 15 May | ||||
| 6. | Shelduck | 0 | 0 | 2 | 17 | 9 | 28 | 3 | 25 | 9 (19 Apr) | 19 | 7 | 8 Mar | 10 May | ||||
| 7. | Shoveler | 0 | 0 | 60 | 7 | 0 | 67 | 18 | 49 | 33 ( 8 Mar) | 19 | 7 | 8 Mar | 19 Apr | ||||
| 8. | Gadwall | 0 | 0 | 4 | 7 | 5 | 16 | 5 | 11 | 5 ( 1 May) | 14 | 5 | 20 Mar | 1 May | ||||
| 9. | Wigeon | 3 | 29 | 46 | 0 | 0 | 78 | 23 | 55 | 17 (20 Mar) | 31 | 11 | 2 Jan | 29 Mar | ||||
| 10. | Mallard | 0 | 0 | 5 | 0 | 4 | 9 | 6 | 3 | 4 ( 8 Mar) | 8 | 3 | 8 Mar | 1 May | ||||
| 11. | Pintail | 0 | 0 | 255 | 12 | 0 | 267 | 0 | 267 | 255 ( 8 Mar) | 6 | 2 | 8 Mar | 12 Apr | ||||
| 12. | Teal | 1 | 44 | 727 | 85 | 8 | 865 | 90 | 775 | 223 (29 Mar) | 58 | 21 | 16 Jan | 17 May | ||||
| 13. | Tufted Duck | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 (19 Apr) | 3 | 1 | 19 Apr | 19 Apr | ||||
| 14. | Scaup | 0 | 0 | 14 | 0 | 0 | 14 | 14 | 0 | 14 (13 Mar) | 3 | 1 | 13 Mar | 13 Mar | ||||
| 15. | Eider | 147 | 686 | 1968 | 428 | 48 | 3277 | 2808 | 469 | 440 ( 8 Mar) | 100 | 36 | 2 Jan | 17 May | ||||
| 16. | Surf Scoter | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (27 Mar) | 3 | 1 | 27 Mar | 27 Mar | ||||
| 17. | Velvet Scoter | 2 | 4 | 71 | 29 | 0 | 106 | 98 | 8 | 25 (27 Mar) | 36 | 13 | 7 Jan | 26 Apr | ||||
| 18. | Common Scoter | 876 | 2199 | 19996 | 2192 | 1778 | 27041 | 21236 | 5805 | 3066 (29 Mar) | 100 | 36 | 2 Jan | 17 May | ||||
| 19. | Long-tailed Duck | 0 | 8 | 2 | 0 | 0 | 10 | 8 | 2 | 2 ( 1 Feb) | 17 | 6 | 1 Feb | 3 Mar | ||||
| 20. | Goldeneye | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (17 Feb) | 3 | 1 | 17 Feb | 17 Feb | ||||
| 21. | Goosander | 0 | 0 | 3 | 0 | 0 | 3 | 1 | 2 | 2 ( 6 Mar) | 6 | 2 | 6 Mar | 8 Mar | ||||
| 22. | Red-breasted Merganser | 0 | 5 | 12 | 13 | 0 | 30 | 7 | 23 | 9 (19 Apr) | 31 | 11 | 8 Feb | 26 Apr | ||||
| 23. | Red-necked Grebe | 1 | 1 | 2 | 0 | 0 | 4 | 4 | 0 | 1 (11 Jan) | 11 | 4 | 11 Jan | 3 Mar | ||||
| 24. | Great Crested Grebe | 29 | 141 | 28 | 2 | 4 | 204 | 132 | 72 | 51 ( 4 Feb) | 72 | 26 | 2 Jan | 17 May | ||||
| 25. | Oystercatcher | 19 | 17 | 12 | 7 | 40 | 95 | 55 | 40 | 28 ( 1 May) | 28 | 10 | 16 Jan | 17 May | ||||
| 26. | Grey Plover | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 2 | 2 (29 Mar) | 3 | 1 | 29 Mar | 29 Mar | ||||
| 27. | Lapwing | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 (10 Mar) | 3 | 1 | 10 Mar | 10 Mar | ||||
| 28. | Whimbrel | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 3 | 3 (10 May) | 3 | 1 | 10 May | 10 May | ||||
| 29. | Curlew | 2 | 0 | 2 | 35 | 0 | 39 | 0 | 39 | 31 (12 Apr) | 14 | 5 | 9 Jan | 26 Apr | ||||
| 30. | Bar-tailed Godwit | 0 | 0 | 0 | 185 | 22 | 207 | 5 | 202 | 90 (26 Apr) | 19 | 7 | 12 Apr | 17 May | ||||
| Species | Jan | Feb | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Turnstone | 0 | 23 | 0 | 0 | 22 | 45 | 15 | 30 | 22 ( 8 Feb) | 14 | 5 | 6 Feb | 10 May | ||||
| 32. | Knot | 0 | 1 | 0 | 40 | 15 | 56 | 1 | 55 | 40 (24 Apr) | 8 | 3 | 4 Feb | 10 May | ||||
| 33. | Sanderling | 66 | 12 | 92 | 220 | 335 | 725 | 136 | 589 | 231 ( 1 May) | 67 | 24 | 2 Jan | 17 May | ||||
| 34. | Dunlin | 0 | 11 | 174 | 34 | 22 | 241 | 2 | 239 | 121 (22 Mar) | 31 | 11 | 6 Feb | 17 May | ||||
| 35. | Little Tern | 0 | 0 | 0 | 13 | 87 | 100 | 19 | 81 | 26 (10 May) | 22 | 8 | 19 Apr | 17 May | ||||
| 36. | Black Tern | 0 | 0 | 0 | 21 | 8 | 29 | 0 | 29 | 20 (19 Apr) | 14 | 5 | 19 Apr | 15 May | ||||
| 37. | Common/Arctic Tern | 0 | 0 | 0 | 1449 | 2450 | 3899 | 195 | 3704 | 720 (26 Apr) | 22 | 8 | 19 Apr | 17 May | ||||
| 38. | Common Tern | 0 | 0 | 2 | 3 | 0 | 5 | 0 | 5 | 3 (12 Apr) | 6 | 2 | 22 Mar | 12 Apr | ||||
| 39. | Sandwich Tern | 0 | 0 | 92 | 1945 | 3207 | 5244 | 683 | 4561 | 1329 (15 May) | 39 | 14 | 20 Mar | 17 May | ||||
| 40. | Little Gull | 7 | 79 | 596 | 62 | 16 | 760 | 164 | 596 | 436 (15 Mar) | 58 | 21 | 4 Jan | 17 May | ||||
| 41. | Kittiwake | 290 | 0 | 1 | 0 | 0 | 291 | 281 | 10 | 277 ( 7 Jan) | 14 | 5 | 4 Jan | 28 Mar | ||||
| 42. | Black-headed Gull | 40 | 232 | 916 | 13 | 16 | 1217 | 1013 | 204 | 488 ( 3 Mar) | 92 | 33 | 2 Jan | 15 May | ||||
| 43. | Common Gull | 93 | 183 | 281 | 26 | 4 | 587 | 221 | 366 | 78 ( 6 Feb) | 69 | 25 | 4 Jan | 17 May | ||||
| 44. | Caspian Gull | 0 | 0 | 2 | 0 | 0 | 2 | 2 | 0 | 1 (28 Mar) | 6 | 2 | 28 Mar | 29 Mar | ||||
| 45. | Herring Gull | 1596 | 2207 | 1844 | 63 | 0 | 5710 | 3240 | 2470 | 695 ( 6 Feb) | 72 | 26 | 2 Jan | 19 Apr | ||||
| 46. | Great Black-backed Gull | 67 | 47 | 2 | 5 | 5 | 126 | 76 | 50 | 40 (16 Jan) | 44 | 16 | 2 Jan | 17 May | ||||
| 47. | Lesser Black-backed Gull | 0 | 118 | 854 | 139 | 0 | 1111 | 409 | 702 | 262 (10 Mar) | 56 | 20 | 1 Feb | 19 Apr | ||||
| 48. | Arctic Skua | 0 | 0 | 0 | 1 | 4 | 5 | 1 | 4 | 2 (10 May) | 11 | 4 | 24 Apr | 17 May | ||||
| 49. | Great Skua | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 7 Jan) | 3 | 1 | 7 Jan | 7 Jan | ||||
| 50. | Razorbill | 1 | 1 | 0 | 0 | 0 | 2 | 1 | 1 | 1 ( 7 Jan) | 6 | 2 | 7 Jan | 4 Feb | ||||
| 51. | Razorbill/Guillemot | 35 | 3 | 55 | 0 | 1 | 94 | 65 | 29 | 30 (29 Mar) | 36 | 13 | 7 Jan | 17 May | ||||
| 52. | Guillemot | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 7 Jan) | 3 | 1 | 7 Jan | 7 Jan | ||||
| 53. | Red-throated Diver | 1825 | 332 | 333 | 28 | 10 | 2528 | 1829 | 699 | 775 ( 2 Jan) | 94 | 34 | 2 Jan | 17 May | ||||
| 54. | Black-throated Diver | 3 | 3 | 1 | 0 | 0 | 7 | 1 | 6 | 2 ( 9 Jan) | 17 | 6 | 9 Jan | 28 Mar | ||||
| 55. | Fulmar | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (10 Jan) | 3 | 1 | 10 Jan | 10 Jan | ||||
| 56. | Gannet | 559 | 190 | 652 | 27 | 48 | 1476 | 776 | 700 | 214 (11 Jan) | 100 | 36 | 2 Jan | 17 May | ||||
| 57. | Cormorant | 308 | 275 | 1094 | 412 | 2476 | 4565 | 2107 | 2458 | 800 (17 May) | 100 | 36 | 2 Jan | 17 May | ||||
| 58. | Jackdaw | 0 | 0 | 8 | 0 | 0 | 8 | 0 | 8 | 8 (22 Mar) | 3 | 1 | 22 Mar | 22 Mar | ||||
| 59. | Rook | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 (10 May) | 3 | 1 | 10 May | 10 May | ||||
| 60. | Carrion Crow | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 3 | 1 | 22 Mar | 22 Mar | ||||
| Species | Jan | Feb | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Skylark | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 3 | 1 | 22 Mar | 22 Mar | ||||
| 62. | Sand Martin | 0 | 0 | 0 | 3 | 3 | 6 | 0 | 6 | 3 (26 Apr) | 8 | 3 | 26 Apr | 10 May | ||||
| 63. | Swallow | 0 | 0 | 0 | 0 | 6 | 6 | 0 | 6 | 4 ( 8 May) | 6 | 2 | 8 May | 10 May | ||||
| 64. | Starling | 0 | 0 | 27 | 0 | 0 | 27 | 0 | 27 | 17 (15 Mar) | 6 | 2 | 15 Mar | 20 Mar | ||||
| 65. | Wheatear | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 (29 Mar) | 3 | 1 | 29 Mar | 29 Mar | ||||
| Other species | ||||||||||||||||||
| Species | Jan | Feb | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Harbour Porpoise | 2 | 5 | 5 | 0 | 1 | 13 | 6 | 7 | 3 (27 Feb) | 19 | 7 | 7 Jan | 10 May | ||||
| 2. | Grey seal | 3 | 0 | 1 | 0 | 1 | 5 | 2 | 3 | 2 (16 Jan) | 11 | 4 | 9 Jan | 10 May | ||||
| 3. | Common Seal | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 (15 Mar) | 3 | 1 | 15 Mar | 15 Mar | ||||
| Species | Jan | Feb | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 6019 | 6986 | 31206 | 7565 | 10717 | 62493 | 35948 | 26545 | 100 | 36 | ||||||||
| Observation hours | 13:00 | 16:00 | 24:00 | 8:00 | 10:00 | 71:00 | ||||||||||||
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