Also present
Totals Meijendel (Wassenaar) 2025
| Species | Jan | Feb | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Greylag Goose | 76 | 0 | 0 | 0 | 0 | 76 | 76 | 0 | 76 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 2. | goose sp. | 90 | 0 | 0 | 0 | 0 | 90 | 30 | 60 | 90 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 3. | Egyptian Goose | 13 | 0 | 0 | 0 | 0 | 13 | 13 | 0 | 13 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 4. | Gadwall | 0 | 0 | 0 | 0 | 5 | 5 | 0 | 5 | 5 ( 9 May) | 33 | 1 | 9 May | 9 May | ||||
| 5. | Pochard | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 ( 8 May) | 33 | 1 | 8 May | 8 May | ||||
| 6. | Goosander | 2 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 2 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 7. | Red-breasted Merganser | 2 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 2 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 8. | Swift | 0 | 0 | 0 | 0 | 27 | 27 | 0 | 27 | 18 ( 9 May) | 67 | 2 | 8 May | 9 May | ||||
| 9. | Collared Dove | 3 | 0 | 0 | 0 | 0 | 3 | 0 | 3 | 3 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 10. | Lapwing | 35 | 0 | 0 | 0 | 0 | 35 | 35 | 0 | 35 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 11. | Common Tern | 0 | 0 | 0 | 0 | 41 | 41 | 4 | 37 | 29 ( 8 May) | 67 | 2 | 8 May | 9 May | ||||
| 12. | Black-headed Gull | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 13. | Common Gull | 34 | 0 | 0 | 0 | 0 | 34 | 30 | 4 | 34 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 14. | Herring Gull | 9 | 0 | 0 | 0 | 3 | 12 | 9 | 3 | 9 (11 Jan) | 67 | 2 | 11 Jan | 8 May | ||||
| 15. | Lesser Black-backed Gull | 0 | 0 | 0 | 0 | 28 | 28 | 0 | 28 | 27 ( 8 May) | 67 | 2 | 8 May | 9 May | ||||
| 16. | Cormorant | 95 | 0 | 0 | 0 | 28 | 123 | 79 | 44 | 95 (11 Jan) | 67 | 2 | 11 Jan | 8 May | ||||
| 17. | Grey Heron | 0 | 0 | 0 | 0 | 6 | 6 | 4 | 2 | 5 ( 8 May) | 67 | 2 | 8 May | 9 May | ||||
| 18. | Sparrowhawk | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 ( 9 May) | 33 | 1 | 9 May | 9 May | ||||
| 19. | Great Spotted Woodpecker | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 20. | Merlin | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 ( 9 May) | 33 | 1 | 9 May | 9 May | ||||
| 21. | Jackdaw | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 2 | 2 ( 9 May) | 33 | 1 | 9 May | 9 May | ||||
| 22. | Carrion Crow | 2 | 0 | 0 | 0 | 0 | 2 | 1 | 1 | 2 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 23. | Sand Martin | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 3 | 2 ( 9 May) | 67 | 2 | 8 May | 9 May | ||||
| 24. | Swallow | 0 | 0 | 0 | 0 | 43 | 43 | 0 | 43 | 33 ( 9 May) | 67 | 2 | 8 May | 9 May | ||||
| 25. | Fieldfare | 12 | 0 | 0 | 0 | 0 | 12 | 0 | 12 | 12 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 26. | Meadow Pipit | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| 27. | passerine sp. | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (11 Jan) | 33 | 1 | 11 Jan | 11 Jan | ||||
| Other species | ||||||||||||||||||
| Species | Jan | Feb | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Red Admiral | 0 | 0 | 0 | 0 | 9 | 9 | 7 | 2 | 7 ( 8 May) | 67 | 2 | 8 May | 9 May | ||||
| Species | Jan | Feb | Mar | Apr | May | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 377 | 0 | 0 | 0 | 198 | 575 | 295 | 280 | 100 | 3 | ||||||||
| Observation hours | 1:00 | 0:00 | 0:00 | 0:00 | 3:00 | 4:00 | ||||||||||||
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