Also present
Totals Bertusnol, Texel 2021
| Species | Apr | Totals | SW | NE | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Barnacle Goose | 1 | 1 | 1 | 0 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 2. | Greylag Goose | 4 | 4 | 1 | 3 | 4 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 3. | Shelduck | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 4. | Shoveler | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 5. | Gadwall | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 6. | Wigeon | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 7. | Teal | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 8. | Eider | 73 | 73 | 23 | 50 | 73 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 9. | Common Scoter | 534 | 534 | 451 | 83 | 534 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 10. | Red-breasted Merganser | 6 | 6 | 0 | 6 | 6 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 11. | Swift | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 12. | Feral Pigeon | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 13. | Stock Dove | 3 | 3 | 0 | 3 | 3 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 14. | Woodpigeon | 59 | 59 | 1 | 58 | 59 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 15. | Collared Dove | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 16. | Golden Plover | 281 | 281 | 0 | 281 | 281 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 17. | Lapwing | 3 | 3 | 0 | 3 | 3 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 18. | Whimbrel | 3 | 3 | 0 | 3 | 3 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 19. | Curlew | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 20. | Bar-tailed Godwit | 115 | 115 | 0 | 115 | 115 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 21. | wader sp. | 357 | 357 | 0 | 357 | 357 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 22. | Sanderling | 8 | 8 | 0 | 8 | 8 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 23. | Dunlin | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 24. | Little Tern | 34 | 34 | 0 | 34 | 34 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 25. | Common/Arctic Tern | 74 | 74 | 8 | 66 | 74 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 26. | Sandwich Tern | 199 | 199 | 0 | 199 | 199 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 27. | Little Gull | 106 | 106 | 1 | 105 | 106 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 28. | Black-headed Gull | 11 | 11 | 0 | 11 | 11 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 29. | Common Gull | 439 | 439 | 0 | 439 | 439 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 30. | Great Black-backed Gull | 9 | 9 | 1 | 8 | 9 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| Species | Apr | Totals | SW | NE | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Red-throated Diver | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 32. | Black-throated Diver | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 33. | Gannet | 3 | 3 | 1 | 2 | 3 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 34. | Spoonbill | 5 | 5 | 0 | 5 | 5 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 35. | Great White Egret | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 36. | Grey Heron | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 37. | Sparrowhawk | 9 | 9 | 0 | 9 | 9 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 38. | Marsh Harrier | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 39. | Hen Harrier | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 40. | Common Buzzard | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 41. | Kestrel | 7 | 7 | 0 | 7 | 7 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 42. | Jay | 3 | 3 | 0 | 3 | 3 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 43. | Wood Lark | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 44. | Skylark | 7 | 7 | 0 | 7 | 7 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 45. | Sand Martin | 67 | 67 | 1 | 66 | 67 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 46. | Swallow | 77 | 77 | 12 | 65 | 77 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 47. | House Martin | 4 | 4 | 0 | 4 | 4 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 48. | Starling | 3 | 3 | 0 | 3 | 3 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 49. | Song Thrush | 4 | 4 | 0 | 4 | 4 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 50. | Fieldfare | 7 | 7 | 0 | 7 | 7 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 51. | Ring Ouzel | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 52. | Dunnock | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 53. | Blue-headed Wagtail | 4 | 4 | 0 | 4 | 4 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 54. | Yellow Wagtail (flavissima) | 6 | 6 | 0 | 6 | 6 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 55. | Yellow wagtail sp. | 15 | 15 | 2 | 13 | 15 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 56. | White Wagtail | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 57. | alba wagtail sp. | 19 | 19 | 3 | 16 | 19 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 58. | Meadow Pipit | 113 | 113 | 0 | 113 | 113 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 59. | Tree Pipit | 19 | 19 | 1 | 18 | 19 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 60. | Chaffinch | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| Species | Apr | Totals | SW | NE | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Greenfinch | 2 | 2 | 0 | 2 | 2 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 62. | Linnet | 31 | 31 | 0 | 31 | 31 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 63. | redpoll sp. | 3 | 3 | 0 | 3 | 3 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 64. | Crossbill | 24 | 24 | 0 | 24 | 24 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 65. | Goldfinch | 13 | 13 | 2 | 11 | 13 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 66. | Siskin | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| 67. | Reed Bunting | 1 | 1 | 0 | 1 | 1 (27 Apr) | 100 | 1 | 27 Apr | 27 Apr | ||||
| Species | Apr | Totals | SW | NE | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 2801 | 2801 | 509 | 2292 | 100 | 1 | ||||||||
| Observation hours | 8:04 | 8:04 | ||||||||||||
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