Also present
Totals De Gorzen (Ridderkerk) 2025
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Barnacle Goose | 97 | 384 | 481 | 0 | 481 | 339 ( 4 Apr) | 75 | 6 | 1 Mar | 4 Apr | ||||
| 2. | Lesser Canada Goose | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 3. | Greylag Goose | 11 | 2 | 13 | 0 | 13 | 5 ( 1 Mar) | 50 | 4 | 1 Mar | 4 Apr | ||||
| 4. | Eurasian White-fronted Goose | 68 | 0 | 68 | 0 | 68 | 38 ( 1 Mar) | 38 | 3 | 1 Mar | 22 Mar | ||||
| 5. | Shelduck | 0 | 5 | 5 | 0 | 5 | 3 ( 2 Apr) | 25 | 2 | 2 Apr | 4 Apr | ||||
| 6. | Shoveler | 8 | 0 | 8 | 0 | 8 | 5 (22 Mar) | 25 | 2 | 21 Mar | 22 Mar | ||||
| 7. | Wigeon | 50 | 0 | 50 | 0 | 50 | 44 ( 8 Mar) | 25 | 2 | 8 Mar | 22 Mar | ||||
| 8. | Pintail | 1 | 0 | 1 | 0 | 1 | 1 (21 Mar) | 13 | 1 | 21 Mar | 21 Mar | ||||
| 9. | Tufted Duck | 0 | 3 | 3 | 0 | 3 | 3 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 10. | Goosander | 3 | 0 | 3 | 0 | 3 | 3 ( 8 Mar) | 13 | 1 | 8 Mar | 8 Mar | ||||
| 11. | Stock Dove | 2 | 22 | 24 | 0 | 24 | 16 ( 4 Apr) | 63 | 5 | 8 Mar | 4 Apr | ||||
| 12. | Woodpigeon | 106 | 105 | 211 | 0 | 211 | 104 ( 4 Apr) | 75 | 6 | 8 Mar | 4 Apr | ||||
| 13. | Collared Dove | 0 | 2 | 2 | 0 | 2 | 2 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 14. | Oystercatcher | 6 | 2 | 8 | 0 | 8 | 6 (22 Mar) | 25 | 2 | 22 Mar | 2 Apr | ||||
| 15. | Golden Plover | 3 | 20 | 23 | 0 | 23 | 20 ( 4 Apr) | 25 | 2 | 8 Mar | 4 Apr | ||||
| 16. | Little Ringed Plover | 6 | 6 | 12 | 0 | 12 | 5 ( 4 Apr) | 63 | 5 | 8 Mar | 4 Apr | ||||
| 17. | Lapwing | 9 | 1 | 10 | 0 | 10 | 9 ( 8 Mar) | 25 | 2 | 8 Mar | 4 Apr | ||||
| 18. | Whimbrel | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 19. | Curlew | 4 | 1 | 5 | 0 | 5 | 3 ( 8 Mar) | 38 | 3 | 8 Mar | 4 Apr | ||||
| 20. | Black-tailed Godwit | 41 | 4 | 45 | 0 | 45 | 33 (22 Mar) | 75 | 6 | 8 Mar | 4 Apr | ||||
| 21. | Icelandic Black-tailed Godwit | 1 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 13 | 1 | 22 Mar | 22 Mar | ||||
| 22. | Snipe | 7 | 0 | 7 | 0 | 7 | 7 ( 8 Mar) | 13 | 1 | 8 Mar | 8 Mar | ||||
| 23. | Green Sandpiper | 2 | 21 | 23 | 0 | 23 | 17 ( 4 Apr) | 50 | 4 | 22 Mar | 4 Apr | ||||
| 24. | Redshank | 11 | 13 | 24 | 0 | 24 | 12 ( 4 Apr) | 63 | 5 | 8 Mar | 4 Apr | ||||
| 25. | Spotted Redshank | 0 | 3 | 3 | 0 | 3 | 3 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 26. | Greenshank | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 27. | Ruff | 1 | 1 | 2 | 0 | 2 | 1 (22 Mar) | 25 | 2 | 22 Mar | 2 Apr | ||||
| 28. | Black-headed Gull | 112 | 122 | 234 | 0 | 234 | 81 ( 4 Apr) | 100 | 8 | 1 Mar | 4 Apr | ||||
| 29. | Mediterranean Gull | 7 | 24 | 31 | 3 | 28 | 17 ( 4 Apr) | 75 | 6 | 8 Mar | 4 Apr | ||||
| 30. | Common Gull | 3 | 4 | 7 | 0 | 7 | 4 ( 4 Apr) | 38 | 3 | 8 Mar | 4 Apr | ||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Herring Gull | 2 | 0 | 2 | 0 | 2 | 2 (22 Mar) | 13 | 1 | 22 Mar | 22 Mar | ||||
| 32. | Lesser Black-backed Gull | 23 | 13 | 36 | 0 | 36 | 11 ( 8 Mar) | 75 | 6 | 8 Mar | 4 Apr | ||||
| 33. | White Stork | 2 | 13 | 15 | 0 | 15 | 10 ( 3 Apr) | 38 | 3 | 8 Mar | 4 Apr | ||||
| 34. | Cormorant | 121 | 440 | 561 | 0 | 561 | 409 ( 4 Apr) | 75 | 6 | 8 Mar | 4 Apr | ||||
| 35. | Spoonbill | 14 | 18 | 32 | 0 | 32 | 14 (29 Mar) | 50 | 4 | 29 Mar | 4 Apr | ||||
| 36. | Great White Egret | 9 | 9 | 18 | 0 | 18 | 9 ( 4 Apr) | 50 | 4 | 8 Mar | 4 Apr | ||||
| 37. | Grey Heron | 11 | 38 | 49 | 0 | 49 | 35 ( 4 Apr) | 63 | 5 | 8 Mar | 4 Apr | ||||
| 38. | Purple Heron | 0 | 5 | 5 | 0 | 5 | 5 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 39. | Sparrowhawk | 2 | 26 | 28 | 0 | 28 | 20 ( 4 Apr) | 38 | 3 | 22 Mar | 4 Apr | ||||
| 40. | Goshawk | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 41. | Marsh Harrier | 4 | 38 | 42 | 0 | 42 | 26 ( 4 Apr) | 63 | 5 | 22 Mar | 4 Apr | ||||
| 42. | Hen Harrier | 1 | 5 | 6 | 0 | 6 | 5 ( 4 Apr) | 25 | 2 | 8 Mar | 4 Apr | ||||
| 43. | White-tailed Eagle | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 44. | Common Buzzard | 3 | 7 | 10 | 0 | 10 | 4 ( 3 Apr) | 50 | 4 | 1 Mar | 4 Apr | ||||
| 45. | Kestrel | 1 | 9 | 10 | 0 | 10 | 7 ( 4 Apr) | 38 | 3 | 22 Mar | 4 Apr | ||||
| 46. | Merlin | 0 | 2 | 2 | 0 | 2 | 1 ( 3 Apr) | 25 | 2 | 3 Apr | 4 Apr | ||||
| 47. | Peregrine | 1 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 13 | 1 | 22 Mar | 22 Mar | ||||
| 48. | Magpie | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 49. | Jackdaw | 73 | 44 | 117 | 0 | 117 | 59 ( 8 Mar) | 88 | 7 | 8 Mar | 4 Apr | ||||
| 50. | Rook | 0 | 10 | 10 | 0 | 10 | 7 ( 4 Apr) | 25 | 2 | 3 Apr | 4 Apr | ||||
| 51. | Carrion Crow | 0 | 6 | 6 | 0 | 6 | 4 ( 4 Apr) | 38 | 3 | 2 Apr | 4 Apr | ||||
| 52. | Hooded Crow | 1 | 0 | 1 | 0 | 1 | 1 (21 Mar) | 13 | 1 | 21 Mar | 21 Mar | ||||
| 53. | Wood Lark | 1 | 0 | 1 | 0 | 1 | 1 ( 8 Mar) | 13 | 1 | 8 Mar | 8 Mar | ||||
| 54. | Skylark | 7 | 0 | 7 | 0 | 7 | 7 (21 Mar) | 13 | 1 | 21 Mar | 21 Mar | ||||
| 55. | Sand Martin | 2 | 118 | 120 | 0 | 120 | 111 ( 4 Apr) | 38 | 3 | 29 Mar | 4 Apr | ||||
| 56. | Swallow | 0 | 56 | 56 | 0 | 56 | 54 ( 4 Apr) | 25 | 2 | 3 Apr | 4 Apr | ||||
| 57. | Chiffchaff | 0 | 2 | 2 | 0 | 2 | 2 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 58. | Starling | 4149 | 9 | 4158 | 0 | 4158 | 2991 (22 Mar) | 88 | 7 | 1 Mar | 4 Apr | ||||
| 59. | Song Thrush | 2 | 2 | 4 | 0 | 4 | 2 ( 4 Apr) | 38 | 3 | 8 Mar | 4 Apr | ||||
| 60. | Mistle Thrush | 1 | 0 | 1 | 0 | 1 | 1 ( 8 Mar) | 13 | 1 | 8 Mar | 8 Mar | ||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 61. | Redwing | 1838 | 0 | 1838 | 0 | 1838 | 1432 (22 Mar) | 38 | 3 | 21 Mar | 29 Mar | ||||
| 62. | Blackbird | 1 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 13 | 1 | 22 Mar | 22 Mar | ||||
| 63. | Fieldfare | 19 | 54 | 73 | 0 | 73 | 54 ( 4 Apr) | 38 | 3 | 22 Mar | 4 Apr | ||||
| 64. | Yellow wagtail sp. | 2 | 12 | 14 | 0 | 14 | 12 ( 4 Apr) | 25 | 2 | 29 Mar | 4 Apr | ||||
| 65. | Grey Wagtail | 1 | 0 | 1 | 0 | 1 | 1 (22 Mar) | 13 | 1 | 22 Mar | 22 Mar | ||||
| 66. | White Wagtail | 14 | 3 | 17 | 0 | 17 | 13 (21 Mar) | 50 | 4 | 1 Mar | 4 Apr | ||||
| 67. | alba wagtail sp. | 113 | 23 | 136 | 0 | 136 | 65 (22 Mar) | 88 | 7 | 8 Mar | 4 Apr | ||||
| 68. | Meadow Pipit | 18 | 759 | 777 | 0 | 777 | 632 ( 4 Apr) | 75 | 6 | 8 Mar | 4 Apr | ||||
| 69. | Tree Pipit | 0 | 3 | 3 | 0 | 3 | 3 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 70. | Water Pipit | 4 | 0 | 4 | 0 | 4 | 2 ( 8 Mar) | 25 | 2 | 8 Mar | 22 Mar | ||||
| 71. | Rock Pipit/Water Pipit | 0 | 2 | 2 | 0 | 2 | 1 ( 2 Apr) | 25 | 2 | 2 Apr | 4 Apr | ||||
| 72. | Chaffinch | 495 | 6 | 501 | 0 | 501 | 431 ( 8 Mar) | 63 | 5 | 8 Mar | 4 Apr | ||||
| 73. | Greenfinch | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 74. | Linnet | 9 | 38 | 47 | 0 | 47 | 33 ( 4 Apr) | 75 | 6 | 8 Mar | 4 Apr | ||||
| 75. | Goldfinch | 1 | 5 | 6 | 0 | 6 | 5 ( 4 Apr) | 25 | 2 | 22 Mar | 4 Apr | ||||
| 76. | Reed Bunting | 7 | 0 | 7 | 0 | 7 | 5 ( 8 Mar) | 25 | 2 | 8 Mar | 22 Mar | ||||
| Other species | |||||||||||||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | European Peacock | 0 | 9 | 9 | 0 | 9 | 6 ( 3 Apr) | 25 | 2 | 3 Apr | 4 Apr | ||||
| 2. | white sp. (butterfly) | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| 3. | Comma | 0 | 1 | 1 | 0 | 1 | 1 ( 4 Apr) | 13 | 1 | 4 Apr | 4 Apr | ||||
| Other species | |||||||||||||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Bumblebee sp. | 0 | 2 | 2 | 0 | 2 | 1 ( 3 Apr) | 25 | 2 | 3 Apr | 4 Apr | ||||
| Species | Mar | Apr | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 7511 | 2540 | 10051 | 3 | 10048 | 100 | 8 | ||||||||
| Observation hours | 15:43 | 16:12 | 31:55 | ||||||||||||
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