Totals Maasvlakte II 2026
| Year | |
| Period | |
| count-field | |
| Also present | |
| Species | Jan | Feb | Mar | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Dark-bellied Brent Goose | 12 | 0 | 161 | 173 | 4 | 169 | 161 (16 Mar) | 25 | 3 | 5 Jan | 16 Mar | ||||
| 2. | Barnacle Goose | 1 | 0 | 0 | 1 | 1 | 0 | 1 (22 Jan) | 8 | 1 | 22 Jan | 22 Jan | ||||
| 3. | Greylag Goose | 1 | 4 | 0 | 5 | 2 | 3 | 3 (7 Feb) | 25 | 3 | 24 Jan | 7 Feb | ||||
| 4. | goose sp. | 0 | 55 | 59 | 114 | 0 | 114 | 55 (7 Feb) | 25 | 3 | 7 Feb | 16 Mar | ||||
| 5. | Egyptian Goose | 7 | 7 | 0 | 14 | 7 | 7 | 7 (24 Jan) | 17 | 2 | 24 Jan | 23 Feb | ||||
| 6. | Shelduck | 5 | 2 | 0 | 7 | 2 | 5 | 3 (10 Jan) | 25 | 3 | 10 Jan | 14 Feb | ||||
| 7. | Shoveler | 0 | 0 | 8 | 8 | 0 | 8 | 8 (14 Mar) | 8 | 1 | 14 Mar | 14 Mar | ||||
| 8. | Wigeon | 22 | 0 | 0 | 22 | 22 | 0 | 22 (10 Jan) | 8 | 1 | 10 Jan | 10 Jan | ||||
| 9. | Mallard | 6 | 0 | 0 | 6 | 5 | 1 | 6 (10 Jan) | 8 | 1 | 10 Jan | 10 Jan | ||||
| 10. | Pintail | 6 | 0 | 0 | 6 | 6 | 0 | 6 (24 Jan) | 8 | 1 | 24 Jan | 24 Jan | ||||
| 11. | Teal | 4 | 0 | 3 | 7 | 4 | 3 | 4 (24 Jan) | 17 | 2 | 24 Jan | 14 Mar | ||||
| 12. | duck sp. | 0 | 18 | 24 | 42 | 18 | 24 | 23 (14 Mar) | 33 | 4 | 14 Feb | 16 Mar | ||||
| 13. | Pochard | 0 | 1 | 0 | 1 | 0 | 1 | 1 (14 Feb) | 8 | 1 | 14 Feb | 14 Feb | ||||
| 14. | Tufted Duck | 0 | 12 | 0 | 12 | 0 | 12 | 12 (17 Feb) | 8 | 1 | 17 Feb | 17 Feb | ||||
| 15. | Scaup | 1 | 0 | 0 | 1 | 1 | 0 | 1 (10 Jan) | 8 | 1 | 10 Jan | 10 Jan | ||||
| 16. | Eider | 10 | 21 | 74 | 105 | 22 | 83 | 67 (14 Mar) | 83 | 10 | 5 Jan | 16 Mar | ||||
| 17. | Velvet Scoter | 0 | 1 | 2 | 3 | 3 | 0 | 2 (16 Mar) | 17 | 2 | 23 Feb | 16 Mar | ||||
| 18. | Common Scoter | 83 | 236 | 237 | 556 | 156 | 400 | 180 (16 Mar) | 100 | 12 | 5 Jan | 16 Mar | ||||
| 19. | Goldeneye | 2 | 0 | 0 | 2 | 0 | 2 | 2 (24 Jan) | 8 | 1 | 24 Jan | 24 Jan | ||||
| 20. | Goosander | 1 | 0 | 0 | 1 | 1 | 0 | 1 (24 Jan) | 8 | 1 | 24 Jan | 24 Jan | ||||
| 21. | Red-breasted Merganser | 15 | 15 | 13 | 43 | 20 | 23 | 11 (23 Feb) | 67 | 8 | 5 Jan | 16 Mar | ||||
| 22. | Great Crested Grebe | 2 | 57 | 3 | 62 | 55 | 7 | 52 (23 Feb) | 67 | 8 | 22 Jan | 16 Mar | ||||
| 23. | Oystercatcher | 0 | 5 | 0 | 5 | 5 | 0 | 3 (7 Feb) | 25 | 3 | 2 Feb | 14 Feb | ||||
| 24. | Curlew | 0 | 18 | 0 | 18 | 17 | 1 | 16 (7 Feb) | 25 | 3 | 7 Feb | 23 Feb | ||||
| 25. | Snipe | 1 | 0 | 3 | 4 | 2 | 2 | 3 (14 Mar) | 17 | 2 | 10 Jan | 14 Mar | ||||
| 26. | wader sp. | 1 | 2 | 0 | 3 | 3 | 0 | 2 (7 Feb) | 17 | 2 | 26 Jan | 7 Feb | ||||
| 27. | Dunlin | 11 | 0 | 0 | 11 | 11 | 0 | 11 (24 Jan) | 8 | 1 | 24 Jan | 24 Jan | ||||
| 28. | Sandwich Tern | 4 | 0 | 5 | 9 | 5 | 4 | 4 (24 Jan) | 25 | 3 | 24 Jan | 16 Mar | ||||
| 29. | Little Gull | 2 | 5 | 0 | 7 | 7 | 0 | 4 (23 Feb) | 25 | 3 | 5 Jan | 23 Feb | ||||
| 30. | Kittiwake | 788 | 72 | 2 | 862 | 681 | 181 | 568 (24 Jan) | 92 | 11 | 5 Jan | 16 Mar | ||||
| Species | Jan | Feb | Mar | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Black-headed Gull | 595 | 96 | 18 | 709 | 546 | 163 | 452 (24 Jan) | 100 | 12 | 5 Jan | 16 Mar | ||||
| 32. | Mediterranean Gull | 0 | 0 | 1 | 1 | 1 | 0 | 1 (16 Mar) | 8 | 1 | 16 Mar | 16 Mar | ||||
| 33. | Common Gull | 742 | 651 | 127 | 1520 | 715 | 805 | 429 (24 Jan) | 100 | 12 | 5 Jan | 16 Mar | ||||
| 34. | Herring Gull | 28 | 63 | 18 | 109 | 48 | 61 | 26 (23 Feb) | 92 | 11 | 5 Jan | 16 Mar | ||||
| 35. | Great Black-backed Gull | 18 | 62 | 15 | 95 | 58 | 37 | 45 (23 Feb) | 92 | 11 | 5 Jan | 16 Mar | ||||
| 36. | Lesser Black-backed Gull | 1 | 1 | 138 | 140 | 71 | 69 | 115 (16 Mar) | 33 | 4 | 24 Jan | 16 Mar | ||||
| 37. | Razorbill | 23 | 3 | 0 | 26 | 6 | 20 | 16 (26 Jan) | 50 | 6 | 10 Jan | 7 Feb | ||||
| 38. | Razorbill/Guillemot | 3074 | 66 | 1 | 3141 | 1081 | 2060 | 2447 (22 Jan) | 83 | 10 | 5 Jan | 16 Mar | ||||
| 39. | alca / fratercula spec | 1 | 0 | 0 | 1 | 1 | 0 | 1 (5 Jan) | 8 | 1 | 5 Jan | 5 Jan | ||||
| 40. | Guillemot | 0 | 2 | 0 | 2 | 1 | 1 | 1 (14 Feb) | 17 | 2 | 14 Feb | 17 Feb | ||||
| 41. | Red-throated Diver | 448 | 243 | 115 | 806 | 535 | 271 | 189 (5 Jan) | 100 | 12 | 5 Jan | 16 Mar | ||||
| 42. | Fulmar | 1 | 0 | 0 | 1 | 1 | 0 | 1 (5 Jan) | 8 | 1 | 5 Jan | 5 Jan | ||||
| 43. | Gannet | 1083 | 1435 | 1627 | 4145 | 2374 | 1771 | 1365 (16 Mar) | 100 | 12 | 5 Jan | 16 Mar | ||||
| 44. | Cormorant | 2050 | 1945 | 18 | 4013 | 3672 | 341 | 1900 (26 Jan) | 75 | 9 | 5 Jan | 16 Mar | ||||
| 45. | Skylark | 0 | 3 | 0 | 3 | 1 | 2 | 3 (7 Feb) | 8 | 1 | 7 Feb | 7 Feb | ||||
| Other species | ||||||||||||||||
| Species | Jan | Feb | Mar | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Harbour Porpoise | 0 | 17 | 0 | 17 | 0 | 17 | 15 (2 Feb) | 17 | 2 | 2 Feb | 17 Feb | ||||
| Species | Jan | Feb | Mar | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 9049 | 5118 | 2672 | 16839 | 10171 | 6668 | 100 | 12 | ||||||||
| Observation hours | 13:47 | 10:42 | 4:41 | 29:10 | ||||||||||||
This page is created on 2026/03/17 09:20:31 and will be cached for 2 minutes.
