Totals Grevenbicht (nacht) 2011 - 2020
| Species | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Totals | Average | Present | Year Maximum | |
1. | Canada Goose | 0 | 0 | 0 | 0 | 0 | 4 | 9 | 16 | 6 | 2 | 37 | 7.4 | 0 | 16 (2018) | | | | |
2. | Barnacle Goose | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 1 | 1 | 8 | 1.6 | 0 | 5 (2018) | | | | |
3. | Greylag Goose | 0 | 0 | 0 | 0 | 0 | 5 | 53 | 35 | 54 | 43 | 190 | 38 | 0 | 54 (2019) | | | | |
4. | goose sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.2 | 0 | 1 (2018) | | | | |
5. | Tundra Bean Goose | 0 | 0 | 0 | 0 | 0 | 0 | 28 | 60 | 67 | 33 | 188 | 38 | 0 | 67 (2019) | | | | |
6. | Bean Goose sp. | 0 | 0 | 0 | 0 | 0 | 2 | 16 | 5 | 1 | 0 | 24 | 4.8 | 0 | 16 (2017) | | | | |
7. | Eurasian White-fronted Goose | 0 | 0 | 0 | 0 | 0 | 25 | 165 | 387 | 300 | 360 | 1237 | 247 | 0 | 387 (2018) | | | | |
8. | Black Swan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.2 | 0 | 1 (2020) | | | | |
9. | Mute Swan | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 1 | 0 | 6 | 1.2 | 0 | 3 (2017) | | | | |
10. | Bewick's Swan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 0.6 | 0 | 3 (2018) | | | | |
11. | Egyptian Goose | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 5 | 2 | 1 | 12 | 2.4 | 0 | 5 (2018) | | | | |
12. | Shelduck | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 6 | 9 | 1.8 | 0 | 6 (2020) | | | | |
13. | Garganey | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 6 | 1.2 | 0 | 6 (2019) | | | | |
14. | Gadwall | 0 | 0 | 0 | 0 | 0 | 2 | 11 | 15 | 12 | 21 | 61 | 12.2 | 0 | 21 (2020) | | | | |
15. | Wigeon | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 21 | 28 | 10 | 76 | 15.2 | 0 | 28 (2019) | | | | |
16. | Mallard | 0 | 0 | 0 | 0 | 0 | 3 | 31 | 22 | 17 | 26 | 99 | 19.8 | 0 | 31 (2017) | | | | |
17. | Pintail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 0.6 | 0 | 3 (2020) | | | | |
18. | Teal | 0 | 0 | 0 | 0 | 0 | 3 | 5 | 10 | 7 | 12 | 37 | 7.4 | 0 | 12 (2020) | | | | |
19. | duck sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.2 | 0 | 1 (2020) | | | | |
20. | Goldeneye | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 11 | 0 | 3 | 21 | 4.2 | 0 | 11 (2018) | | | | |
21. | Quail | 0 | 0 | 0 | 0 | 0 | 10 | 14 | 15 | 31 | 22 | 92 | 18.4 | 0 | 31 (2019) | | | | |
22. | Swift | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 | 5 | 1 | 1 | 3 (2020) | | | | |
23. | Cuckoo | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 3 | 0.6 | 0 | 2 (2019) | | | | |
24. | Water Rail | 0 | 0 | 0 | 0 | 0 | 9 | 23 | 29 | 20 | 42 | 123 | 25 | 0 | 42 (2020) | | | | |
25. | Spotted Crake | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 1 | 5 | 1 | 0 | 2 (2017) | | | | |
26. | Moorhen | 0 | 0 | 0 | 0 | 0 | 39 | 73 | 88 | 96 | 87 | 383 | 77 | 0 | 96 (2019) | | | | |
27. | Coot | 0 | 0 | 0 | 0 | 0 | 34 | 70 | 66 | 88 | 82 | 340 | 68 | 0 | 88 (2019) | | | | |
28. | Baillon's Crake | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 2 | 0.4 | 0 | 1 (2017) | | | | |
29. | Crane | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 33 | 0 | 10 | 47 | 9.4 | 0 | 33 (2018) | | | | |
30. | Little Grebe | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 7 | 6 | 7 | 25 | 5 | 0 | 7 (2018) | | | | |
31. | Oystercatcher | 0 | 0 | 0 | 0 | 0 | 8 | 31 | 28 | 14 | 9 | 90 | 18 | 0 | 31 (2017) | | | | |
32. | Avocet | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2 | 0.4 | 0 | 2 (2018) | | | | |
33. | Lapwing | 0 | 0 | 0 | 0 | 0 | 6 | 26 | 28 | 16 | 15 | 91 | 18.2 | 0 | 28 (2018) | | | | |
34. | Golden Plover | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 7 | 7 | 9 | 32 | 6.4 | 0 | 9 (2020) | | | | |
35. | Grey Plover | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 6 | 10 | 2 | 0 | 6 (2020) | | | | |
36. | Ringed Plover | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 4 | 11 | 4 | 24 | 4.8 | 0 | 11 (2019) | | | | |
37. | Little Ringed Plover | 0 | 0 | 0 | 0 | 0 | 18 | 26 | 31 | 44 | 43 | 162 | 32 | 0 | 44 (2019) | | | | |
38. | Dotterel | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2 | 0.4 | 0 | 2 (2018) | | | | |
39. | Whimbrel | 0 | 0 | 0 | 0 | 0 | 7 | 4 | 18 | 9 | 12 | 50 | 10 | 0 | 18 (2018) | | | | |
40. | Curlew | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 11 | 6 | 10 | 36 | 7.2 | 0 | 11 (2018) | | | | |
41. | Curlew Sandpiper | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0.2 | 0 | 1 (2016) | | | | |
42. | Dunlin | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 0.4 | 0 | 1 (2019) | | | | |
43. | Snipe | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 0 | 4 | 12 | 2.4 | 0 | 4 (2017) | | | | |
44. | Common Sandpiper | 0 | 0 | 0 | 0 | 0 | 25 | 29 | 41 | 55 | 50 | 200 | 40 | 0 | 55 (2019) | | | | |
45. | Green Sandpiper | 0 | 0 | 0 | 0 | 0 | 9 | 28 | 25 | 28 | 28 | 118 | 24 | 0 | 28 (2017) | | | | |
46. | Redshank | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 2 | 8 | 6 | 25 | 5 | 0 | 8 (2019) | | | | |
47. | Wood Sandpiper | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 | 4 | 3 | 12 | 2.4 | 0 | 4 (2019) | | | | |
48. | Greenshank | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 12 | 10 | 11 | 42 | 8.4 | 0 | 12 (2018) | | | | |
49. | Black-headed Gull | 0 | 0 | 0 | 0 | 0 | 72 | 221 | 259 | 160 | 171 | 883 | 177 | 0 | 259 (2018) | | | | |
50. | Mediterranean Gull | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 4 | 4 | 9 | 1.8 | 0 | 4 (2019) | | | | |
| Species | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Totals | Average | Present | Year Maximum | |
51. | Common Gull | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 7 | 0 | 1 | 9 | 1.8 | 0 | 7 (2018) | | | | |
52. | Herring Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 1 | 0 | 6 | 1.2 | 0 | 5 (2018) | | | | |
53. | Caspian Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 0.6 | 0 | 3 (2018) | | | | |
54. | Lesser Black-backed Gull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 2 | 0 | 17 | 3.4 | 0 | 15 (2018) | | | | |
55. | Laridae sp. | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 2 | 0.4 | 0 | 1 (2016) | | | | |
56. | large gull sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 2 | 3 | 16 | 3.2 | 0 | 11 (2018) | | | | |
57. | Sandwich Tern | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 2 | 0.4 | 0 | 1 (2017) | | | | |
58. | Common Tern | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 4 | 8 | 1.6 | 0 | 4 (2020) | | | | |
59. | Bittern | 0 | 0 | 0 | 0 | 0 | 1 | 8 | 7 | 2 | 7 | 25 | 5 | 0 | 8 (2017) | | | | |
60. | Little Bittern | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 5 | 12 | 2.4 | 0 | 7 (2019) | | | | |
61. | Night Heron | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 3 | 3 | 8 | 1.6 | 0 | 3 (2019) | | | | |
62. | Grey Heron | 0 | 0 | 0 | 0 | 0 | 65 | 135 | 125 | 151 | 128 | 604 | 121 | 0 | 151 (2019) | | | | |
63. | Barn Owl | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 0.4 | 0 | 2 (2017) | | | | |
64. | Long-eared Owl | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.2 | 0 | 1 (2019) | | | | |
65. | Eagle Owl | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.2 | 0 | 1 (2019) | | | | |
66. | Tawny Owl | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.2 | 0 | 1 (2019) | | | | |
67. | Waxwing | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0.2 | 0 | 1 (2016) | | | | |
68. | Wood Lark | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.2 | 0 | 1 (2018) | | | | |
69. | Skylark | 0 | 0 | 0 | 0 | 0 | 20 | 37 | 58 | 71 | 33 | 219 | 44 | 0 | 71 (2019) | | | | |
70. | Chiffchaff | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.2 | 0 | 1 (2019) | | | | |
71. | Marsh Warbler | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.2 | 0 | 1 (2018) | | | | |
72. | Blackcap | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 0.4 | 0 | 2 (2020) | | | | |
73. | Lesser Whitethroat | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 0.4 | 0 | 1 (2019) | | | | |
74. | Goldcrest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 | 0 | 6 | 1.2 | 0 | 4 (2019) | | | | |
75. | Wren | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0.2 | 0 | 1 (2017) | | | | |
76. | Starling | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 4 | 0.8 | 0 | 3 (2019) | | | | |
77. | Song Thrush | 0 | 0 | 0 | 0 | 0 | 1022 | 2898 | 2634 | 3678 | 4288 | 14520 | 2904 | 0 | 4288 (2020) | | | | |
78. | Redwing | 0 | 0 | 0 | 0 | 0 | 627 | 2096 | 2953 | 4046 | 4624 | 14346 | 2869 | 0 | 4624 (2020) | | | | |
79. | Blackbird | 0 | 0 | 0 | 0 | 0 | 105 | 207 | 376 | 453 | 266 | 1407 | 281 | 0 | 453 (2019) | | | | |
80. | Eye-browed Thrush | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.2 | 0 | 1 (2019) | | | | |
81. | Fieldfare | 0 | 0 | 0 | 0 | 0 | 2 | 27 | 6 | 5 | 7 | 47 | 9.4 | 0 | 27 (2017) | | | | |
82. | Ring Ouzel | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 2 | 2 | 9 | 1.8 | 0 | 4 (2017) | | | | |
83. | Spotted Flycatcher | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 10 | 13 | 2.6 | 0 | 10 (2020) | | | | |
84. | flycatcher sp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 2 | 6 | 1.2 | 0 | 4 (2019) | | | | |
85. | Robin | 0 | 0 | 0 | 0 | 0 | 222 | 276 | 235 | 463 | 435 | 1631 | 326 | 0 | 463 (2019) | | | | |
86. | Pied Flycatcher | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 3 | 0.6 | 0 | 2 (2018) | | | | |
87. | Black Redstart | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 | 2 | 3 | 10 | 2 | 0 | 3 (2018) | | | | |
88. | Dunnock | 0 | 0 | 0 | 0 | 0 | 5 | 1 | 4 | 0 | 1 | 11 | 2.2 | 0 | 5 (2016) | | | | |
89. | Blue-headed Wagtail | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 3 | 0.6 | 0 | 2 (2020) | | | | |
90. | Yellow wagtail sp. | 0 | 0 | 0 | 0 | 0 | 4 | 6 | 3 | 0 | 1 | 14 | 2.8 | 0 | 6 (2017) | | | | |
91. | White Wagtail | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 5 | 7 | 1.4 | 0 | 5 (2020) | | | | |
92. | Richard's Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.2 | 0 | 1 (2018) | | | | |
93. | Tawny Pipit | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.2 | 0 | 1 (2019) | | | | |
94. | Tree Pipit | 0 | 0 | 0 | 0 | 0 | 24 | 32 | 39 | 108 | 33 | 236 | 47 | 0 | 108 (2019) | | | | |
95. | Chaffinch | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 1 | 0 | 4 | 0.8 | 0 | 2 (2017) | | | | |
96. | Brambling | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 2 | 0 | 5 | 1 | 0 | 3 (2017) | | | | |
97. | Hawfinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.2 | 0 | 1 (2020) | | | | |
98. | Greenfinch | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.2 | 0 | 1 (2020) | | | | |
99. | Linnet | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0.2 | 0 | 1 (2018) | | | | |
100. | Crossbill | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0.2 | 0 | 1 (2017) | | | | |
| Species | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Totals | Average | Present | Year Maximum | |
101. | Lapland Bunting | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0.2 | 0 | 1 (2019) | | | | |
102. | Yellowhammer | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 1 | 4 | 0.8 | 0 | 2 (2018) | | | | |
103. | Ortolan Bunting | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 17 | 9 | 8 | 39 | 7.8 | 0 | 17 (2018) | | | | |
104. | Reed Bunting | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 2 | 3 | 11 | 2.2 | 0 | 3 (2020) | | | | |
105. | Species unidentified | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 317 | 336 | 664 | 133 | 0 | 336 (2020) | | | | |
| Species | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Totals | Average | Present | Year Maximum | |
|
Totals |
0 | 0 | 0 | 0 | 0 | 2414 | 6682 | 7845 | 10478 | 11382 | 38801 | 7760 | 1 | | |
|
Observation hours |
| | | | | 972:50 | 2,410:53 | 2,670:38 | 2,660:10 | 2,610:57 | 11,325:28 | 2,265:06 | | | |