Also present
Totals De Gorzen (Ridderkerk) 2025
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Canada Goose | 0 | 2 | 0 | 2 | 0 | 2 | 1 (12 Apr) | 7 | 2 | 12 Apr | 22 Apr | ||||
| 2. | Barnacle Goose | 97 | 3034 | 99 | 3230 | 0 | 3230 | 893 (14 Apr) | 77 | 23 | 1 Mar | 1 May | ||||
| 3. | Lesser Canada Goose | 0 | 1 | 0 | 1 | 0 | 1 | 1 ( 4 Apr) | 3 | 1 | 4 Apr | 4 Apr | ||||
| 4. | Greylag Goose | 11 | 109 | 14 | 134 | 0 | 134 | 18 (26 Apr) | 67 | 20 | 1 Mar | 1 May | ||||
| 5. | Domestic Goose | 0 | 1 | 0 | 1 | 0 | 1 | 1 (11 Apr) | 3 | 1 | 11 Apr | 11 Apr | ||||
| 6. | Tundra Bean Goose | 0 | 1 | 0 | 1 | 0 | 1 | 1 (23 Apr) | 3 | 1 | 23 Apr | 23 Apr | ||||
| 7. | Eurasian White-fronted Goose | 68 | 0 | 0 | 68 | 0 | 68 | 38 ( 1 Mar) | 10 | 3 | 1 Mar | 22 Mar | ||||
| 8. | Mute Swan | 0 | 46 | 4 | 50 | 14 | 36 | 15 (28 Apr) | 37 | 11 | 5 Apr | 1 May | ||||
| 9. | Egyptian Goose | 0 | 57 | 0 | 57 | 0 | 57 | 10 (11 Apr) | 30 | 9 | 11 Apr | 30 Apr | ||||
| 10. | Shelduck | 0 | 71 | 1 | 72 | 0 | 72 | 13 (15 Apr) | 53 | 16 | 2 Apr | 1 May | ||||
| 11. | Garganey | 0 | 2 | 0 | 2 | 0 | 2 | 2 (12 Apr) | 3 | 1 | 12 Apr | 12 Apr | ||||
| 12. | Shoveler | 8 | 77 | 0 | 85 | 0 | 85 | 30 ( 5 Apr) | 33 | 10 | 21 Mar | 26 Apr | ||||
| 13. | Gadwall | 0 | 21 | 2 | 23 | 0 | 23 | 5 ( 5 Apr) | 27 | 8 | 5 Apr | 1 May | ||||
| 14. | Wigeon | 50 | 1 | 0 | 51 | 1 | 50 | 44 ( 8 Mar) | 10 | 3 | 8 Mar | 29 Apr | ||||
| 15. | Mallard | 0 | 7 | 1 | 8 | 0 | 8 | 2 (12 Apr) | 17 | 5 | 5 Apr | 1 May | ||||
| 16. | Pintail | 1 | 3 | 0 | 4 | 0 | 4 | 3 (29 Apr) | 7 | 2 | 21 Mar | 29 Apr | ||||
| 17. | Pochard | 0 | 5 | 0 | 5 | 1 | 4 | 2 (15 Apr) | 13 | 4 | 12 Apr | 26 Apr | ||||
| 18. | Tufted Duck | 0 | 12 | 1 | 13 | 0 | 13 | 5 (12 Apr) | 17 | 5 | 4 Apr | 1 May | ||||
| 19. | Goosander | 3 | 0 | 0 | 3 | 0 | 3 | 3 ( 8 Mar) | 3 | 1 | 8 Mar | 8 Mar | ||||
| 20. | Swift | 0 | 379 | 23 | 402 | 0 | 402 | 172 (26 Apr) | 33 | 10 | 15 Apr | 1 May | ||||
| 21. | Cuckoo | 0 | 7 | 0 | 7 | 0 | 7 | 3 (26 Apr) | 13 | 4 | 26 Apr | 30 Apr | ||||
| 22. | Stock Dove | 2 | 78 | 2 | 82 | 0 | 82 | 17 (15 Apr) | 63 | 19 | 8 Mar | 1 May | ||||
| 23. | Woodpigeon | 106 | 182 | 11 | 299 | 0 | 299 | 104 ( 4 Apr) | 73 | 22 | 8 Mar | 1 May | ||||
| 24. | Turtle Dove | 0 | 1 | 0 | 1 | 0 | 1 | 1 (30 Apr) | 3 | 1 | 30 Apr | 30 Apr | ||||
| 25. | Collared Dove | 0 | 44 | 5 | 49 | 1 | 48 | 11 (26 Apr) | 43 | 13 | 4 Apr | 1 May | ||||
| 26. | Crane | 0 | 2 | 0 | 2 | 0 | 2 | 2 ( 7 Apr) | 3 | 1 | 7 Apr | 7 Apr | ||||
| 27. | Great Crested Grebe | 0 | 1 | 0 | 1 | 1 | 0 | 1 (29 Apr) | 3 | 1 | 29 Apr | 29 Apr | ||||
| 28. | Oystercatcher | 6 | 5 | 2 | 13 | 0 | 13 | 6 (22 Mar) | 17 | 5 | 22 Mar | 1 May | ||||
| 29. | Avocet | 0 | 5 | 0 | 5 | 0 | 5 | 3 (14 Apr) | 7 | 2 | 14 Apr | 15 Apr | ||||
| 30. | Golden Plover | 3 | 119 | 0 | 122 | 0 | 122 | 64 (11 Apr) | 17 | 5 | 8 Mar | 11 Apr | ||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Ringed Plover | 0 | 3 | 0 | 3 | 0 | 3 | 1 (22 Apr) | 10 | 3 | 22 Apr | 29 Apr | ||||
| 32. | Little Ringed Plover | 6 | 81 | 1 | 88 | 0 | 88 | 30 ( 5 Apr) | 70 | 21 | 8 Mar | 1 May | ||||
| 33. | Lapwing | 9 | 34 | 1 | 44 | 1 | 43 | 12 ( 5 Apr) | 40 | 12 | 8 Mar | 1 May | ||||
| 34. | Whimbrel | 0 | 575 | 6 | 581 | 0 | 581 | 144 ( 5 Apr) | 63 | 19 | 4 Apr | 1 May | ||||
| 35. | Curlew | 4 | 9 | 0 | 13 | 0 | 13 | 3 ( 8 Mar) | 30 | 9 | 8 Mar | 28 Apr | ||||
| 36. | Black-tailed Godwit | 41 | 423 | 0 | 464 | 0 | 464 | 292 (12 Apr) | 60 | 18 | 8 Mar | 29 Apr | ||||
| 37. | Icelandic Black-tailed Godwit | 1 | 3 | 0 | 4 | 0 | 4 | 3 (28 Apr) | 7 | 2 | 22 Mar | 28 Apr | ||||
| 38. | Snipe | 7 | 11 | 0 | 18 | 0 | 18 | 7 ( 8 Mar) | 13 | 4 | 8 Mar | 29 Apr | ||||
| 39. | Common Sandpiper | 0 | 5 | 0 | 5 | 0 | 5 | 2 (15 Apr) | 10 | 3 | 14 Apr | 30 Apr | ||||
| 40. | Green Sandpiper | 2 | 156 | 0 | 158 | 0 | 158 | 55 ( 5 Apr) | 57 | 17 | 22 Mar | 23 Apr | ||||
| 41. | Marsh Sandpiper | 0 | 1 | 0 | 1 | 0 | 1 | 1 (10 Apr) | 3 | 1 | 10 Apr | 10 Apr | ||||
| 42. | Wood Sandpiper | 0 | 42 | 1 | 43 | 0 | 43 | 21 (30 Apr) | 23 | 7 | 12 Apr | 1 May | ||||
| 43. | Redshank | 11 | 100 | 3 | 114 | 0 | 114 | 17 ( 5 Apr) | 67 | 20 | 8 Mar | 1 May | ||||
| 44. | Spotted Redshank | 0 | 15 | 0 | 15 | 0 | 15 | 3 ( 4 Apr) | 27 | 8 | 4 Apr | 28 Apr | ||||
| 45. | Greenshank | 0 | 65 | 9 | 74 | 0 | 74 | 15 (30 Apr) | 57 | 17 | 4 Apr | 1 May | ||||
| 46. | Ruff | 1 | 87 | 0 | 88 | 0 | 88 | 46 (22 Apr) | 30 | 9 | 22 Mar | 30 Apr | ||||
| 47. | Dunlin | 0 | 2 | 0 | 2 | 0 | 2 | 2 (14 Apr) | 3 | 1 | 14 Apr | 14 Apr | ||||
| 48. | Caspian Tern | 0 | 5 | 1 | 6 | 0 | 6 | 3 (15 Apr) | 10 | 3 | 12 Apr | 1 May | ||||
| 49. | Black Tern | 0 | 50 | 15 | 65 | 0 | 65 | 29 (15 Apr) | 27 | 8 | 15 Apr | 1 May | ||||
| 50. | Common Tern | 0 | 125 | 9 | 134 | 2 | 132 | 33 (29 Apr) | 50 | 15 | 8 Apr | 1 May | ||||
| 51. | Little Gull | 0 | 8 | 0 | 8 | 0 | 8 | 5 (11 Apr) | 7 | 2 | 11 Apr | 26 Apr | ||||
| 52. | Black-headed Gull | 112 | 890 | 17 | 1019 | 1 | 1018 | 219 (11 Apr) | 97 | 29 | 1 Mar | 1 May | ||||
| 53. | Mediterranean Gull | 7 | 388 | 6 | 401 | 43 | 358 | 50 (19 Apr) | 90 | 27 | 8 Mar | 1 May | ||||
| 54. | Common Gull | 3 | 12 | 1 | 16 | 1 | 15 | 4 ( 4 Apr) | 30 | 9 | 8 Mar | 1 May | ||||
| 55. | Herring Gull | 2 | 7 | 2 | 11 | 0 | 11 | 3 (11 Apr) | 17 | 5 | 22 Mar | 1 May | ||||
| 56. | Yellow-legged Gull | 0 | 1 | 0 | 1 | 0 | 1 | 1 ( 7 Apr) | 3 | 1 | 7 Apr | 7 Apr | ||||
| 57. | Great Black-backed Gull | 0 | 1 | 0 | 1 | 0 | 1 | 1 (28 Apr) | 3 | 1 | 28 Apr | 28 Apr | ||||
| 58. | Lesser Black-backed Gull | 23 | 133 | 19 | 175 | 0 | 175 | 19 ( 1 May) | 70 | 21 | 8 Mar | 1 May | ||||
| 59. | White Stork | 2 | 72 | 0 | 74 | 3 | 71 | 12 ( 5 Apr) | 57 | 17 | 8 Mar | 30 Apr | ||||
| 60. | Cormorant | 121 | 1465 | 62 | 1648 | 12 | 1636 | 409 ( 4 Apr) | 90 | 27 | 8 Mar | 1 May | ||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Spoonbill | 14 | 163 | 6 | 183 | 3 | 180 | 27 ( 7 Apr) | 70 | 21 | 29 Mar | 1 May | ||||
| 62. | Little Egret | 0 | 5 | 0 | 5 | 0 | 5 | 2 (15 Apr) | 13 | 4 | 7 Apr | 19 Apr | ||||
| 63. | Cattle Egret | 0 | 2 | 0 | 2 | 0 | 2 | 2 ( 7 Apr) | 3 | 1 | 7 Apr | 7 Apr | ||||
| 64. | Great White Egret | 9 | 53 | 7 | 69 | 3 | 66 | 11 ( 8 Apr) | 53 | 16 | 8 Mar | 1 May | ||||
| 65. | Grey Heron | 11 | 200 | 7 | 218 | 5 | 213 | 50 ( 7 Apr) | 77 | 23 | 8 Mar | 1 May | ||||
| 66. | Purple Heron | 0 | 117 | 13 | 130 | 5 | 125 | 19 ( 7 Apr) | 57 | 17 | 4 Apr | 1 May | ||||
| 67. | Osprey | 0 | 9 | 0 | 9 | 0 | 9 | 3 (12 Apr) | 23 | 7 | 5 Apr | 23 Apr | ||||
| 68. | Sparrowhawk | 2 | 58 | 1 | 61 | 0 | 61 | 20 ( 4 Apr) | 50 | 15 | 22 Mar | 1 May | ||||
| 69. | Goshawk | 0 | 5 | 0 | 5 | 0 | 5 | 2 (15 Apr) | 13 | 4 | 4 Apr | 29 Apr | ||||
| 70. | Marsh Harrier | 4 | 211 | 5 | 220 | 3 | 217 | 49 ( 5 Apr) | 73 | 22 | 22 Mar | 1 May | ||||
| 71. | Hen Harrier | 1 | 18 | 1 | 20 | 0 | 20 | 5 ( 4 Apr) | 37 | 11 | 8 Mar | 1 May | ||||
| 72. | Red Kite | 0 | 4 | 0 | 4 | 2 | 2 | 2 (12 Apr) | 7 | 2 | 12 Apr | 14 Apr | ||||
| 73. | Black Kite | 0 | 1 | 0 | 1 | 1 | 0 | 1 (15 Apr) | 3 | 1 | 15 Apr | 15 Apr | ||||
| 74. | White-tailed Eagle | 0 | 5 | 0 | 5 | 2 | 3 | 1 ( 4 Apr) | 17 | 5 | 4 Apr | 19 Apr | ||||
| 75. | Common Buzzard | 3 | 25 | 0 | 28 | 0 | 28 | 4 ( 3 Apr) | 47 | 14 | 1 Mar | 30 Apr | ||||
| 76. | Short-eared Owl | 0 | 1 | 0 | 1 | 0 | 1 | 1 ( 5 Apr) | 3 | 1 | 5 Apr | 5 Apr | ||||
| 77. | Great Spotted Woodpecker | 0 | 2 | 0 | 2 | 0 | 2 | 1 ( 5 Apr) | 7 | 2 | 5 Apr | 7 Apr | ||||
| 78. | Kestrel | 1 | 63 | 1 | 65 | 0 | 65 | 18 (12 Apr) | 50 | 15 | 22 Mar | 1 May | ||||
| 79. | Merlin | 0 | 14 | 2 | 16 | 0 | 16 | 3 ( 5 Apr) | 37 | 11 | 3 Apr | 1 May | ||||
| 80. | Hobby | 0 | 1 | 0 | 1 | 0 | 1 | 1 (15 Apr) | 3 | 1 | 15 Apr | 15 Apr | ||||
| 81. | Peregrine | 1 | 3 | 0 | 4 | 0 | 4 | 3 (15 Apr) | 7 | 2 | 22 Mar | 15 Apr | ||||
| 82. | Rose-ringed Parakeet | 0 | 3 | 0 | 3 | 0 | 3 | 3 (12 Apr) | 3 | 1 | 12 Apr | 12 Apr | ||||
| 83. | Jay | 0 | 1 | 0 | 1 | 0 | 1 | 1 ( 6 Apr) | 3 | 1 | 6 Apr | 6 Apr | ||||
| 84. | Magpie | 0 | 7 | 1 | 8 | 0 | 8 | 3 (12 Apr) | 20 | 6 | 4 Apr | 1 May | ||||
| 85. | Jackdaw | 73 | 178 | 2 | 253 | 0 | 253 | 59 ( 8 Mar) | 70 | 21 | 8 Mar | 1 May | ||||
| 86. | Rook | 0 | 40 | 1 | 41 | 9 | 32 | 7 ( 4 Apr) | 53 | 16 | 3 Apr | 1 May | ||||
| 87. | Carrion Crow | 0 | 25 | 3 | 28 | 0 | 28 | 4 ( 4 Apr) | 53 | 16 | 2 Apr | 1 May | ||||
| 88. | Hooded Crow | 1 | 0 | 0 | 1 | 0 | 1 | 1 (21 Mar) | 3 | 1 | 21 Mar | 21 Mar | ||||
| 89. | Raven | 0 | 2 | 0 | 2 | 0 | 2 | 2 (12 Apr) | 3 | 1 | 12 Apr | 12 Apr | ||||
| 90. | Wood Lark | 1 | 0 | 0 | 1 | 0 | 1 | 1 ( 8 Mar) | 3 | 1 | 8 Mar | 8 Mar | ||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 91. | Skylark | 7 | 6 | 0 | 13 | 0 | 13 | 7 (21 Mar) | 13 | 4 | 21 Mar | 12 Apr | ||||
| 92. | Sand Martin | 2 | 667 | 8 | 677 | 0 | 677 | 130 ( 5 Apr) | 80 | 24 | 29 Mar | 1 May | ||||
| 93. | Swallow | 0 | 477 | 16 | 493 | 0 | 493 | 67 (23 Apr) | 67 | 20 | 3 Apr | 1 May | ||||
| 94. | House Martin | 0 | 33 | 0 | 33 | 0 | 33 | 8 (26 Apr) | 33 | 10 | 5 Apr | 30 Apr | ||||
| 95. | Chiffchaff | 0 | 4 | 0 | 4 | 0 | 4 | 2 ( 4 Apr) | 10 | 3 | 4 Apr | 23 Apr | ||||
| 96. | Savi's Warbler | 0 | 1 | 0 | 1 | 0 | 1 | 1 (30 Apr) | 3 | 1 | 30 Apr | 30 Apr | ||||
| 97. | Starling | 4149 | 71 | 6 | 4226 | 0 | 4226 | 2991 (22 Mar) | 80 | 24 | 1 Mar | 1 May | ||||
| 98. | Song Thrush | 2 | 672 | 0 | 674 | 0 | 674 | 210 ( 9 Apr) | 50 | 15 | 8 Mar | 29 Apr | ||||
| 99. | Mistle Thrush | 1 | 5 | 0 | 6 | 0 | 6 | 2 (15 Apr) | 17 | 5 | 8 Mar | 15 Apr | ||||
| 100. | Redwing | 1838 | 38 | 0 | 1876 | 0 | 1876 | 1432 (22 Mar) | 23 | 7 | 21 Mar | 12 Apr | ||||
| 101. | Blackbird | 1 | 8 | 0 | 9 | 0 | 9 | 3 ( 7 Apr) | 23 | 7 | 22 Mar | 30 Apr | ||||
| 102. | Fieldfare | 19 | 248 | 0 | 267 | 0 | 267 | 83 (12 Apr) | 33 | 10 | 22 Mar | 14 Apr | ||||
| 103. | Ring Ouzel | 0 | 10 | 0 | 10 | 0 | 10 | 4 (14 Apr) | 13 | 4 | 5 Apr | 15 Apr | ||||
| 104. | Whinchat | 0 | 1 | 0 | 1 | 0 | 1 | 1 (26 Apr) | 3 | 1 | 26 Apr | 26 Apr | ||||
| 105. | Stonechat | 0 | 1 | 0 | 1 | 0 | 1 | 1 (15 Apr) | 3 | 1 | 15 Apr | 15 Apr | ||||
| 106. | Wheatear | 0 | 3 | 1 | 4 | 0 | 4 | 2 (30 Apr) | 10 | 3 | 19 Apr | 1 May | ||||
| 107. | Blue-headed Wagtail | 0 | 23 | 1 | 24 | 0 | 24 | 6 (17 Apr) | 40 | 12 | 5 Apr | 1 May | ||||
| 108. | Grey-headed Wagtail | 0 | 3 | 2 | 5 | 0 | 5 | 2 ( 1 May) | 13 | 4 | 28 Apr | 1 May | ||||
| 109. | Yellow wagtail sp. | 2 | 439 | 30 | 471 | 0 | 471 | 81 ( 7 Apr) | 73 | 22 | 29 Mar | 1 May | ||||
| 110. | Grey Wagtail | 1 | 0 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 3 | 1 | 22 Mar | 22 Mar | ||||
| 111. | White Wagtail | 14 | 16 | 1 | 31 | 0 | 31 | 13 (21 Mar) | 43 | 13 | 1 Mar | 1 May | ||||
| 112. | alba wagtail sp. | 113 | 141 | 0 | 254 | 0 | 254 | 65 (22 Mar) | 70 | 21 | 8 Mar | 30 Apr | ||||
| 113. | Meadow Pipit | 18 | 15444 | 8 | 15470 | 0 | 15470 | 4197 (15 Apr) | 90 | 27 | 8 Mar | 1 May | ||||
| 114. | Tree Pipit | 0 | 50 | 1 | 51 | 0 | 51 | 12 (12 Apr) | 47 | 14 | 4 Apr | 1 May | ||||
| 115. | Water Pipit | 4 | 0 | 0 | 4 | 0 | 4 | 2 ( 8 Mar) | 7 | 2 | 8 Mar | 22 Mar | ||||
| 116. | Rock Pipit/Water Pipit | 0 | 2 | 0 | 2 | 0 | 2 | 1 ( 2 Apr) | 7 | 2 | 2 Apr | 4 Apr | ||||
| 117. | Chaffinch | 495 | 9 | 0 | 504 | 0 | 504 | 431 ( 8 Mar) | 23 | 7 | 8 Mar | 8 Apr | ||||
| 118. | Greenfinch | 0 | 4 | 0 | 4 | 0 | 4 | 2 (12 Apr) | 10 | 3 | 4 Apr | 12 Apr | ||||
| 119. | Linnet | 9 | 82 | 1 | 92 | 0 | 92 | 33 ( 4 Apr) | 60 | 18 | 8 Mar | 1 May | ||||
| 120. | Goldfinch | 1 | 24 | 0 | 25 | 0 | 25 | 5 ( 4 Apr) | 30 | 9 | 22 Mar | 30 Apr | ||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 121. | Yellowhammer | 0 | 1 | 0 | 1 | 0 | 1 | 1 (12 Apr) | 3 | 1 | 12 Apr | 12 Apr | ||||
| 122. | Reed Bunting | 7 | 13 | 0 | 20 | 0 | 20 | 5 ( 8 Mar) | 33 | 10 | 8 Mar | 30 Apr | ||||
| 123. | Species unknown (escape) | 0 | 1 | 0 | 1 | 1 | 0 | 1 (19 Apr) | 3 | 1 | 19 Apr | 19 Apr | ||||
| Other species | ||||||||||||||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Brimstone | 0 | 1 | 0 | 1 | 0 | 1 | 1 (12 Apr) | 3 | 1 | 12 Apr | 12 Apr | ||||
| 2. | European Peacock | 0 | 12 | 0 | 12 | 0 | 12 | 6 ( 3 Apr) | 13 | 4 | 3 Apr | 12 Apr | ||||
| 3. | Swallowtail | 0 | 1 | 0 | 1 | 0 | 1 | 1 (15 Apr) | 3 | 1 | 15 Apr | 15 Apr | ||||
| 4. | Speckled Wood | 0 | 1 | 0 | 1 | 0 | 1 | 1 (12 Apr) | 3 | 1 | 12 Apr | 12 Apr | ||||
| 5. | white sp. (butterfly) | 0 | 5 | 10 | 15 | 0 | 15 | 10 ( 1 May) | 13 | 4 | 4 Apr | 1 May | ||||
| 6. | Comma | 0 | 1 | 0 | 1 | 0 | 1 | 1 ( 4 Apr) | 3 | 1 | 4 Apr | 4 Apr | ||||
| 7. | Red Admiral | 0 | 1 | 0 | 1 | 0 | 1 | 1 (19 Apr) | 3 | 1 | 19 Apr | 19 Apr | ||||
| Other species | ||||||||||||||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Bumblebee sp. | 0 | 3 | 0 | 3 | 0 | 3 | 1 ( 3 Apr) | 10 | 3 | 3 Apr | 8 Apr | ||||
| Species | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 7511 | 28780 | 453 | 36744 | 115 | 36629 | 100 | 30 | ||||||||
| Observation hours | 15:43 | 134:21 | 5:45 | 155:49 | ||||||||||||
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