Totals Delta de la Tordera 2025
| Year | |
| Period | |
| count-field | |
| Also present | |
| Species | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Garganey | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 6 | 6 | 0 | 6 ( 6 Sep) | 8 | 1 | 6 Sep | 6 Sep | ||||
| 2. | Mallard | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (18 Feb) | 8 | 1 | 18 Feb | 18 Feb | ||||
| 3. | Pintail | 0 | 0 | 0 | 6 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 0 | 14 | 8 (10 May) | 15 | 2 | 5 Apr | 10 May | ||||
| 4. | Pochard | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 4 | 0 | 4 | 4 (11 Oct) | 8 | 1 | 11 Oct | 11 Oct | ||||
| 5. | Swift / Pallid Swift | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 2 Aug) | 8 | 1 | 2 Aug | 2 Aug | ||||
| 6. | Crane | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 162 | 162 | 162 | 0 | 162 ( 8 Nov) | 8 | 1 | 8 Nov | 8 Nov | ||||
| 7. | Oystercatcher | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 ( 5 Apr) | 8 | 1 | 5 Apr | 5 Apr | ||||
| 8. | Little Ringed Plover | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 (10 May) | 8 | 1 | 10 May | 10 May | ||||
| 9. | Kentish Plover | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 5 Apr) | 8 | 1 | 5 Apr | 5 Apr | ||||
| 10. | Caspian Tern | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 3 | 0 | 3 ( 6 Sep) | 8 | 1 | 6 Sep | 6 Sep | ||||
| 11. | Common Tern | 0 | 0 | 0 | 112 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 112 | 0 | 112 | 112 ( 5 Apr) | 8 | 1 | 5 Apr | 5 Apr | ||||
| 12. | Sandwich Tern | 5 | 16 | 28 | 44 | 25 | 11 | 10 | 7 | 0 | 3 | 23 | 172 | 41 | 131 | 44 ( 5 Apr) | 85 | 11 | 4 Jan | 8 Nov | ||||
| 13. | Little Gull | 0 | 0 | 0 | 46 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 46 | 0 | 46 | 46 ( 5 Apr) | 8 | 1 | 5 Apr | 5 Apr | ||||
| 14. | Black-headed Gull | 35 | 121 | 35 | 60 | 21 | 0 | 3 | 4 | 41 | 61 | 23 | 404 | 145 | 259 | 82 ( 2 Feb) | 92 | 12 | 4 Jan | 8 Nov | ||||
| 15. | Audouin's Gull | 0 | 6 | 6 | 26 | 9 | 20 | 7 | 8 | 12 | 5 | 32 | 131 | 91 | 40 | 32 ( 8 Nov) | 92 | 12 | 2 Feb | 8 Nov | ||||
| 16. | Mediterranean Gull | 18 | 17 | 30 | 74 | 0 | 1 | 7 | 0 | 2 | 14 | 95 | 258 | 124 | 134 | 95 ( 8 Nov) | 85 | 11 | 4 Jan | 8 Nov | ||||
| 17. | Yellow-legged Gull | 13 | 114 | 15 | 24 | 17 | 11 | 7 | 68 | 13 | 96 | 20 | 398 | 148 | 250 | 100 ( 2 Feb) | 100 | 13 | 4 Jan | 8 Nov | ||||
| 18. | Lesser Black-backed Gull | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 ( 4 Jan) | 8 | 1 | 4 Jan | 4 Jan | ||||
| 19. | Larus intermedius | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 2 Feb) | 8 | 1 | 2 Feb | 2 Feb | ||||
| 20. | Laridae sp. | 4 | 8 | 45 | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 60 | 4 | 56 | 45 ( 1 Mar) | 38 | 5 | 4 Jan | 2 Aug | ||||
| 21. | Arctic Skua | 0 | 0 | 0 | 5 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 6 | 1 | 5 | 5 ( 5 Apr) | 15 | 2 | 5 Apr | 5 Jul | ||||
| 22. | Pomarine Skua | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 2 ( 7 Jun) | 8 | 1 | 7 Jun | 7 Jun | ||||
| 23. | Puffin | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 7 Jun) | 8 | 1 | 7 Jun | 7 Jun | ||||
| 24. | Scopoli's Shearwater | 0 | 0 | 0 | 136 | 72 | 18 | 3 | 157 | 168 | 59 | 0 | 613 | 397 | 216 | 168 ( 6 Sep) | 54 | 7 | 5 Apr | 11 Oct | ||||
| 25. | Yelkouan Shearwater | 2 | 5602 | 0 | 17 | 5 | 48 | 0 | 0 | 0 | 3 | 172 | 5849 | 3829 | 2020 | 5579 ( 2 Feb) | 62 | 8 | 4 Jan | 8 Nov | ||||
| 26. | Balearic Shearwater | 144 | 941 | 82 | 19 | 143 | 7 | 0 | 0 | 0 | 0 | 46 | 1382 | 1075 | 307 | 940 ( 2 Feb) | 62 | 8 | 4 Jan | 8 Nov | ||||
| 27. | Balearic-/Yelkouan Shearwater | 240 | 239 | 442 | 490 | 12 | 0 | 0 | 9 | 0 | 16 | 153 | 1601 | 298 | 1303 | 490 ( 5 Apr) | 62 | 8 | 4 Jan | 8 Nov | ||||
| 28. | Gannet | 1 | 27 | 6 | 5 | 3 | 30 | 3 | 3 | 1 | 0 | 2 | 81 | 26 | 55 | 30 ( 7 Jun) | 77 | 10 | 4 Jan | 8 Nov | ||||
| 29. | Cormorant | 3 | 11 | 0 | 10 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 25 | 0 | 25 | 11 (18 Feb) | 31 | 4 | 4 Jan | 2 Aug | ||||
| 30. | Cormorant (p. c. carbo) | 0 | 19 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 38 | 10 | 28 | 19 ( 2 Feb) | 23 | 3 | 2 Feb | 8 Nov | ||||
| Species | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 31. | Shag | 1 | 8 | 2 | 1 | 26 | 23 | 14 | 8 | 1 | 22 | 13 | 119 | 7 | 112 | 26 (10 May) | 100 | 13 | 4 Jan | 8 Nov | ||||
| 32. | Little Egret | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 ( 6 Sep) | 8 | 1 | 6 Sep | 6 Sep | ||||
| 33. | Great White Egret | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 ( 5 Apr) | 8 | 1 | 5 Apr | 5 Apr | ||||
| 34. | Grey Heron | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 2 | 1 | 1 | 1 ( 2 Aug) | 15 | 2 | 2 Aug | 11 Oct | ||||
| 35. | Swallow | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 0 | 0 | 0 | 0 | 5 | 0 | 5 | 3 ( 5 Jul) | 15 | 2 | 10 May | 5 Jul | ||||
| 36. | Wheatear | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 ( 2 Oct) | 8 | 1 | 2 Oct | 2 Oct | ||||
| Species | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 467 | 7131 | 702 | 1079 | 344 | 172 | 58 | 269 | 248 | 285 | 749 | 11504 | 6374 | 5130 | 100 | 13 | ||||||||
| Observation hours | 2:00 | 3:59 | 2:00 | 2:54 | 2:00 | 2:00 | 2:02 | 2:00 | 2:06 | 4:10 | 2:11 | 27:22 | ||||||||||||
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