Also present
Totals De Hoekse Sluis (Bergambacht) 2025
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Canada Goose | 6 | 5 | 11 | 0 | 11 | 4 ( 8 Mar) | 17 | 4 | 8 Mar | 5 Apr | ||||
| 2. | Barnacle Goose | 2550 | 2437 | 4987 | 38 | 4949 | 2098 (12 Apr) | 75 | 18 | 8 Mar | 12 Apr | ||||
| 3. | Greylag Goose | 77 | 100 | 177 | 0 | 177 | 48 ( 3 Apr) | 54 | 13 | 8 Mar | 15 Apr | ||||
| 4. | Pink-footed Goose | 2 | 0 | 2 | 0 | 2 | 2 (20 Mar) | 4 | 1 | 20 Mar | 20 Mar | ||||
| 5. | Eurasian White-fronted Goose | 2026 | 10 | 2036 | 0 | 2036 | 703 (19 Mar) | 42 | 10 | 8 Mar | 3 Apr | ||||
| 6. | Mute Swan | 7 | 33 | 40 | 0 | 40 | 18 (14 Apr) | 29 | 7 | 8 Mar | 14 Apr | ||||
| 7. | Egyptian Goose | 0 | 96 | 96 | 0 | 96 | 58 (12 Apr) | 17 | 4 | 3 Apr | 12 Apr | ||||
| 8. | Shelduck | 37 | 63 | 100 | 8 | 92 | 27 (12 Apr) | 67 | 16 | 10 Mar | 15 Apr | ||||
| 9. | Shoveler | 2 | 42 | 44 | 0 | 44 | 33 (12 Apr) | 17 | 4 | 8 Mar | 12 Apr | ||||
| 10. | Gadwall | 31 | 16 | 47 | 0 | 47 | 12 (13 Mar) | 54 | 13 | 8 Mar | 15 Apr | ||||
| 11. | Wigeon | 8868 | 98 | 8966 | 239 | 8727 | 3583 ( 8 Mar) | 50 | 12 | 8 Mar | 12 Apr | ||||
| 12. | Mallard | 2 | 9 | 11 | 0 | 11 | 6 (12 Apr) | 17 | 4 | 24 Mar | 12 Apr | ||||
| 13. | Teal | 0 | 2 | 2 | 0 | 2 | 2 ( 3 Apr) | 4 | 1 | 3 Apr | 3 Apr | ||||
| 14. | Red-crested Pochard | 0 | 4 | 4 | 0 | 4 | 4 (12 Apr) | 4 | 1 | 12 Apr | 12 Apr | ||||
| 15. | Tufted Duck | 4 | 23 | 27 | 5 | 22 | 10 (12 Apr) | 38 | 9 | 21 Mar | 14 Apr | ||||
| 16. | Goosander | 1 | 2 | 3 | 2 | 1 | 1 (21 Mar) | 13 | 3 | 21 Mar | 12 Apr | ||||
| 17. | Swift | 0 | 1 | 1 | 0 | 1 | 1 (12 Apr) | 4 | 1 | 12 Apr | 12 Apr | ||||
| 18. | Stock Dove | 21 | 40 | 61 | 1 | 60 | 10 ( 3 Apr) | 71 | 17 | 8 Mar | 14 Apr | ||||
| 19. | Woodpigeon | 301 | 135 | 436 | 2 | 434 | 81 (19 Mar) | 96 | 23 | 8 Mar | 15 Apr | ||||
| 20. | Collared Dove | 8 | 2 | 10 | 0 | 10 | 4 (19 Mar) | 17 | 4 | 8 Mar | 3 Apr | ||||
| 21. | Great Crested Grebe | 2 | 4 | 6 | 1 | 5 | 4 (12 Apr) | 8 | 2 | 20 Mar | 12 Apr | ||||
| 22. | Oystercatcher | 45 | 71 | 116 | 17 | 99 | 16 (12 Apr) | 79 | 19 | 8 Mar | 15 Apr | ||||
| 23. | Avocet | 22 | 37 | 59 | 16 | 43 | 16 (22 Mar) | 42 | 10 | 20 Mar | 15 Apr | ||||
| 24. | Golden Plover | 23 | 0 | 23 | 0 | 23 | 23 ( 8 Mar) | 4 | 1 | 8 Mar | 8 Mar | ||||
| 25. | Ringed Plover | 1 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 4 | 1 | 22 Mar | 22 Mar | ||||
| 26. | Little Ringed Plover | 4 | 18 | 22 | 0 | 22 | 6 ( 3 Apr) | 29 | 7 | 22 Mar | 15 Apr | ||||
| 27. | Lapwing | 16 | 16 | 32 | 0 | 32 | 13 ( 8 Mar) | 42 | 10 | 8 Mar | 15 Apr | ||||
| 28. | Whimbrel | 0 | 116 | 116 | 0 | 116 | 51 ( 5 Apr) | 33 | 8 | 3 Apr | 15 Apr | ||||
| 29. | Curlew | 113 | 10 | 123 | 1 | 122 | 105 (10 Mar) | 42 | 10 | 8 Mar | 15 Apr | ||||
| 30. | Bar-tailed Godwit | 0 | 1 | 1 | 0 | 1 | 1 ( 5 Apr) | 4 | 1 | 5 Apr | 5 Apr | ||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Black-tailed Godwit | 73 | 88 | 161 | 10 | 151 | 55 ( 3 Apr) | 71 | 17 | 8 Mar | 15 Apr | ||||
| 32. | Icelandic Black-tailed Godwit | 0 | 5 | 5 | 0 | 5 | 4 ( 3 Apr) | 8 | 2 | 3 Apr | 6 Apr | ||||
| 33. | Snipe | 6 | 15 | 21 | 3 | 18 | 9 ( 3 Apr) | 21 | 5 | 8 Mar | 12 Apr | ||||
| 34. | Common Sandpiper | 0 | 2 | 2 | 1 | 1 | 1 (12 Apr) | 8 | 2 | 12 Apr | 14 Apr | ||||
| 35. | Green Sandpiper | 6 | 95 | 101 | 0 | 101 | 26 ( 3 Apr) | 54 | 13 | 19 Mar | 15 Apr | ||||
| 36. | Redshank | 24 | 67 | 91 | 4 | 87 | 32 ( 3 Apr) | 67 | 16 | 8 Mar | 14 Apr | ||||
| 37. | Greenshank | 0 | 1 | 1 | 0 | 1 | 1 ( 6 Apr) | 4 | 1 | 6 Apr | 6 Apr | ||||
| 38. | Ruff | 9 | 0 | 9 | 0 | 9 | 4 (19 Mar) | 13 | 3 | 10 Mar | 19 Mar | ||||
| 39. | wader sp. | 19 | 3 | 22 | 0 | 22 | 18 ( 8 Mar) | 17 | 4 | 8 Mar | 12 Apr | ||||
| 40. | small wader | 2 | 1 | 3 | 0 | 3 | 2 (22 Mar) | 8 | 2 | 22 Mar | 5 Apr | ||||
| 41. | Dunlin | 3 | 3 | 6 | 0 | 6 | 3 (20 Mar) | 8 | 2 | 20 Mar | 3 Apr | ||||
| 42. | Caspian Tern | 0 | 2 | 2 | 0 | 2 | 2 (12 Apr) | 4 | 1 | 12 Apr | 12 Apr | ||||
| 43. | Black Tern | 0 | 10 | 10 | 0 | 10 | 5 (15 Apr) | 13 | 3 | 12 Apr | 15 Apr | ||||
| 44. | Common Tern | 0 | 51 | 51 | 0 | 51 | 35 (12 Apr) | 25 | 6 | 3 Apr | 15 Apr | ||||
| 45. | Black-headed Gull | 576 | 642 | 1218 | 9 | 1209 | 237 (12 Apr) | 92 | 22 | 8 Mar | 15 Apr | ||||
| 46. | Mediterranean Gull | 6 | 49 | 55 | 4 | 51 | 24 (11 Apr) | 42 | 10 | 8 Mar | 14 Apr | ||||
| 47. | Common Gull | 128 | 142 | 270 | 4 | 266 | 50 ( 3 Apr) | 96 | 23 | 8 Mar | 15 Apr | ||||
| 48. | Caspian Gull | 19 | 12 | 31 | 2 | 29 | 5 (10 Mar) | 58 | 14 | 8 Mar | 15 Apr | ||||
| 49. | Herring Gull | 12 | 19 | 31 | 0 | 31 | 7 (12 Apr) | 50 | 12 | 8 Mar | 12 Apr | ||||
| 50. | Yellow-legged Gull | 0 | 1 | 1 | 0 | 1 | 1 ( 3 Apr) | 4 | 1 | 3 Apr | 3 Apr | ||||
| 51. | Great Black-backed Gull | 3 | 2 | 5 | 0 | 5 | 1 ( 8 Mar) | 21 | 5 | 8 Mar | 4 Apr | ||||
| 52. | Lesser Black-backed Gull | 232 | 1373 | 1605 | 6 | 1599 | 430 (12 Apr) | 96 | 23 | 8 Mar | 15 Apr | ||||
| 53. | White Stork | 4 | 19 | 23 | 0 | 23 | 5 ( 5 Apr) | 46 | 11 | 13 Mar | 15 Apr | ||||
| 54. | Cormorant | 471 | 997 | 1468 | 12 | 1456 | 390 ( 4 Apr) | 100 | 24 | 8 Mar | 15 Apr | ||||
| 55. | Spoonbill | 18 | 121 | 139 | 8 | 131 | 27 ( 7 Apr) | 79 | 19 | 10 Mar | 15 Apr | ||||
| 56. | Little Egret | 0 | 4 | 4 | 0 | 4 | 4 ( 6 Apr) | 4 | 1 | 6 Apr | 6 Apr | ||||
| 57. | Great White Egret | 7 | 40 | 47 | 6 | 41 | 10 ( 8 Apr) | 50 | 12 | 19 Mar | 15 Apr | ||||
| 58. | Grey Heron | 36 | 154 | 190 | 3 | 187 | 43 ( 7 Apr) | 83 | 20 | 8 Mar | 15 Apr | ||||
| 59. | Purple Heron | 0 | 46 | 46 | 2 | 44 | 14 (12 Apr) | 38 | 9 | 4 Apr | 15 Apr | ||||
| 60. | Osprey | 0 | 6 | 6 | 0 | 6 | 2 ( 4 Apr) | 17 | 4 | 3 Apr | 12 Apr | ||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Sparrowhawk | 19 | 51 | 70 | 4 | 66 | 14 ( 5 Apr) | 88 | 21 | 8 Mar | 15 Apr | ||||
| 62. | Marsh Harrier | 13 | 121 | 134 | 0 | 134 | 35 ( 5 Apr) | 75 | 18 | 10 Mar | 15 Apr | ||||
| 63. | Hen Harrier | 2 | 2 | 4 | 0 | 4 | 1 (20 Mar) | 17 | 4 | 20 Mar | 8 Apr | ||||
| 64. | Pallid Harrier | 0 | 1 | 1 | 0 | 1 | 1 ( 3 Apr) | 4 | 1 | 3 Apr | 3 Apr | ||||
| 65. | Red Kite | 0 | 5 | 5 | 0 | 5 | 2 ( 4 Apr) | 13 | 3 | 4 Apr | 12 Apr | ||||
| 66. | Black Kite | 0 | 2 | 2 | 1 | 1 | 1 (14 Apr) | 8 | 2 | 14 Apr | 15 Apr | ||||
| 67. | White-tailed Eagle | 0 | 5 | 5 | 1 | 4 | 2 (14 Apr) | 17 | 4 | 7 Apr | 14 Apr | ||||
| 68. | Common Buzzard | 36 | 21 | 57 | 0 | 57 | 21 (13 Mar) | 54 | 13 | 8 Mar | 12 Apr | ||||
| 69. | Hoopoe | 0 | 1 | 1 | 0 | 1 | 1 ( 7 Apr) | 4 | 1 | 7 Apr | 7 Apr | ||||
| 70. | Great Spotted Woodpecker | 5 | 5 | 10 | 1 | 9 | 3 (22 Mar) | 29 | 7 | 10 Mar | 14 Apr | ||||
| 71. | Kestrel | 0 | 22 | 22 | 0 | 22 | 11 (12 Apr) | 29 | 7 | 3 Apr | 15 Apr | ||||
| 72. | Merlin | 0 | 7 | 7 | 0 | 7 | 2 ( 3 Apr) | 25 | 6 | 3 Apr | 12 Apr | ||||
| 73. | Peregrine | 2 | 1 | 3 | 3 | 0 | 1 (16 Mar) | 13 | 3 | 16 Mar | 6 Apr | ||||
| 74. | Rose-ringed Parakeet | 14 | 4 | 18 | 0 | 18 | 6 (10 Mar) | 29 | 7 | 10 Mar | 5 Apr | ||||
| 75. | Jay | 0 | 7 | 7 | 2 | 5 | 2 (12 Apr) | 21 | 5 | 4 Apr | 15 Apr | ||||
| 76. | Magpie | 0 | 11 | 11 | 0 | 11 | 6 ( 7 Apr) | 13 | 3 | 7 Apr | 15 Apr | ||||
| 77. | Jackdaw | 16 | 32 | 48 | 0 | 48 | 31 (12 Apr) | 13 | 3 | 20 Mar | 12 Apr | ||||
| 78. | Rook | 8 | 17 | 25 | 8 | 17 | 5 ( 5 Apr) | 46 | 11 | 8 Mar | 15 Apr | ||||
| 79. | Carrion Crow | 4 | 6 | 10 | 0 | 10 | 4 (12 Apr) | 21 | 5 | 10 Mar | 12 Apr | ||||
| 80. | Raven | 0 | 2 | 2 | 0 | 2 | 2 (12 Apr) | 4 | 1 | 12 Apr | 12 Apr | ||||
| 81. | Blue Tit | 35 | 12 | 47 | 0 | 47 | 9 (20 Mar) | 58 | 14 | 8 Mar | 12 Apr | ||||
| 82. | Great Tit | 22 | 5 | 27 | 0 | 27 | 6 (21 Mar) | 58 | 14 | 8 Mar | 12 Apr | ||||
| 83. | Penduline Tit | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 4 | 1 | 4 Apr | 4 Apr | ||||
| 84. | Wood Lark | 0 | 3 | 3 | 0 | 3 | 3 ( 4 Apr) | 4 | 1 | 4 Apr | 4 Apr | ||||
| 85. | Skylark | 14 | 7 | 21 | 0 | 21 | 7 (31 Mar) | 21 | 5 | 8 Mar | 12 Apr | ||||
| 86. | Sand Martin | 2 | 124 | 126 | 0 | 126 | 43 (12 Apr) | 38 | 9 | 31 Mar | 15 Apr | ||||
| 87. | Swallow | 10 | 373 | 383 | 0 | 383 | 76 (12 Apr) | 58 | 14 | 27 Mar | 15 Apr | ||||
| 88. | House Martin | 3 | 14 | 17 | 0 | 17 | 5 (12 Apr) | 29 | 7 | 24 Mar | 12 Apr | ||||
| 89. | Willow Warbler | 0 | 1 | 1 | 0 | 1 | 1 ( 3 Apr) | 4 | 1 | 3 Apr | 3 Apr | ||||
| 90. | Chiffchaff | 7 | 13 | 20 | 1 | 19 | 5 ( 7 Apr) | 50 | 12 | 8 Mar | 15 Apr | ||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 91. | Chiffchaff/Willow Warbler | 0 | 2 | 2 | 0 | 2 | 1 ( 8 Apr) | 8 | 2 | 8 Apr | 15 Apr | ||||
| 92. | Blackcap | 0 | 1 | 1 | 0 | 1 | 1 (12 Apr) | 4 | 1 | 12 Apr | 12 Apr | ||||
| 93. | Firecrest | 0 | 1 | 1 | 0 | 1 | 1 (12 Apr) | 4 | 1 | 12 Apr | 12 Apr | ||||
| 94. | Starling | 1108 | 71 | 1179 | 0 | 1179 | 537 (13 Mar) | 79 | 19 | 8 Mar | 15 Apr | ||||
| 95. | Song Thrush | 10 | 36 | 46 | 0 | 46 | 20 (12 Apr) | 21 | 5 | 22 Mar | 12 Apr | ||||
| 96. | Mistle Thrush | 1 | 4 | 5 | 0 | 5 | 2 ( 3 Apr) | 17 | 4 | 19 Mar | 5 Apr | ||||
| 97. | Redwing | 2530 | 43 | 2573 | 0 | 2573 | 2485 (22 Mar) | 29 | 7 | 21 Mar | 7 Apr | ||||
| 98. | Blackbird | 2 | 3 | 5 | 0 | 5 | 1 (10 Mar) | 21 | 5 | 10 Mar | 12 Apr | ||||
| 99. | Fieldfare | 27 | 75 | 102 | 0 | 102 | 34 ( 4 Apr) | 29 | 7 | 22 Mar | 15 Apr | ||||
| 100. | Ring Ouzel | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 4 | 1 | 4 Apr | 4 Apr | ||||
| 101. | Tree Sparrow | 0 | 1 | 1 | 0 | 1 | 1 ( 3 Apr) | 4 | 1 | 3 Apr | 3 Apr | ||||
| 102. | Dunnock | 3 | 0 | 3 | 0 | 3 | 2 (10 Mar) | 8 | 2 | 8 Mar | 10 Mar | ||||
| 103. | Blue-headed Wagtail | 0 | 56 | 56 | 0 | 56 | 30 ( 7 Apr) | 21 | 5 | 3 Apr | 12 Apr | ||||
| 104. | Yellow wagtail sp. | 0 | 14 | 14 | 0 | 14 | 6 (12 Apr) | 13 | 3 | 8 Apr | 15 Apr | ||||
| 105. | Grey Wagtail | 1 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 4 | 1 | 22 Mar | 22 Mar | ||||
| 106. | White Wagtail | 78 | 93 | 171 | 1 | 170 | 42 ( 3 Apr) | 75 | 18 | 8 Mar | 12 Apr | ||||
| 107. | alba wagtail sp. | 60 | 13 | 73 | 0 | 73 | 33 (22 Mar) | 50 | 12 | 10 Mar | 15 Apr | ||||
| 108. | Motacilla (wagtail) sp. | 0 | 1 | 1 | 0 | 1 | 1 ( 7 Apr) | 4 | 1 | 7 Apr | 7 Apr | ||||
| 109. | Pied Wagtail | 1 | 1 | 2 | 0 | 2 | 1 ( 8 Mar) | 8 | 2 | 8 Mar | 3 Apr | ||||
| 110. | Meadow Pipit | 18 | 5688 | 5706 | 0 | 5706 | 1562 (15 Apr) | 75 | 18 | 10 Mar | 15 Apr | ||||
| 111. | Tree Pipit | 0 | 14 | 14 | 0 | 14 | 6 (15 Apr) | 17 | 4 | 7 Apr | 15 Apr | ||||
| 112. | Water Pipit | 1 | 0 | 1 | 0 | 1 | 1 (10 Mar) | 4 | 1 | 10 Mar | 10 Mar | ||||
| 113. | Rock Pipit/Water Pipit | 1 | 1 | 2 | 0 | 2 | 1 (22 Mar) | 8 | 2 | 22 Mar | 12 Apr | ||||
| 114. | Chaffinch | 670 | 232 | 902 | 2 | 900 | 328 ( 8 Mar) | 96 | 23 | 8 Mar | 15 Apr | ||||
| 115. | Brambling | 3 | 1 | 4 | 0 | 4 | 3 ( 8 Mar) | 8 | 2 | 8 Mar | 15 Apr | ||||
| 116. | Hawfinch | 1 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 4 | 1 | 22 Mar | 22 Mar | ||||
| 117. | Greenfinch | 18 | 17 | 35 | 3 | 32 | 5 (20 Mar) | 46 | 11 | 8 Mar | 10 Apr | ||||
| 118. | Linnet | 14 | 31 | 45 | 2 | 43 | 8 ( 4 Apr) | 63 | 15 | 19 Mar | 15 Apr | ||||
| 119. | Goldfinch | 16 | 20 | 36 | 0 | 36 | 5 (31 Mar) | 50 | 12 | 8 Mar | 15 Apr | ||||
| 120. | Siskin | 5 | 1 | 6 | 0 | 6 | 4 ( 8 Mar) | 13 | 3 | 8 Mar | 7 Apr | ||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 121. | Reed Bunting | 8 | 6 | 14 | 0 | 14 | 3 ( 3 Apr) | 33 | 8 | 8 Mar | 10 Apr | ||||
| 122. | passerine sp. | 2 | 1 | 3 | 0 | 3 | 1 (19 Mar) | 13 | 3 | 19 Mar | 4 Apr | ||||
| Other species | |||||||||||||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Small Tortoiseshell | 1 | 0 | 1 | 0 | 1 | 1 ( 8 Mar) | 4 | 1 | 8 Mar | 8 Mar | ||||
| 2. | European Peacock | 0 | 5 | 5 | 0 | 5 | 2 ( 3 Apr) | 13 | 3 | 3 Apr | 12 Apr | ||||
| Other species | |||||||||||||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Bumblebee sp. | 1 | 5 | 6 | 0 | 6 | 3 (12 Apr) | 13 | 3 | 19 Mar | 12 Apr | ||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 20615 | 14675 | 35290 | 433 | 34857 | 100 | 24 | ||||||||
| Observation hours | 37:59 | 64:58 | 102:57 | ||||||||||||
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