Also present
Totals Delta de la Tordera 2025
| Species | Jan | Feb | Mar | Apr | May | Jun | Jul | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| 1. | Mallard | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 (18 Feb) | 13 | 1 | 18 Feb | 18 Feb | ||||
| 2. | Pintail | 0 | 0 | 0 | 6 | 8 | 0 | 0 | 14 | 0 | 14 | 8 (10 May) | 25 | 2 | 5 Apr | 10 May | ||||
| 3. | Oystercatcher | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 ( 5 Apr) | 13 | 1 | 5 Apr | 5 Apr | ||||
| 4. | Little Ringed Plover | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 (10 May) | 13 | 1 | 10 May | 10 May | ||||
| 5. | Kentish Plover | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 5 Apr) | 13 | 1 | 5 Apr | 5 Apr | ||||
| 6. | Common Tern | 0 | 0 | 0 | 112 | 0 | 0 | 0 | 112 | 0 | 112 | 112 ( 5 Apr) | 13 | 1 | 5 Apr | 5 Apr | ||||
| 7. | Sandwich Tern | 5 | 16 | 28 | 44 | 25 | 11 | 10 | 139 | 22 | 117 | 44 ( 5 Apr) | 100 | 8 | 4 Jan | 5 Jul | ||||
| 8. | Little Gull | 0 | 0 | 0 | 46 | 0 | 0 | 0 | 46 | 0 | 46 | 46 ( 5 Apr) | 13 | 1 | 5 Apr | 5 Apr | ||||
| 9. | Black-headed Gull | 35 | 121 | 35 | 60 | 21 | 0 | 3 | 275 | 77 | 198 | 82 ( 2 Feb) | 88 | 7 | 4 Jan | 5 Jul | ||||
| 10. | Audouin's Gull | 0 | 6 | 6 | 26 | 9 | 20 | 7 | 74 | 40 | 34 | 26 ( 5 Apr) | 88 | 7 | 2 Feb | 5 Jul | ||||
| 11. | Mediterranean Gull | 18 | 17 | 30 | 74 | 0 | 1 | 7 | 147 | 24 | 123 | 74 ( 5 Apr) | 88 | 7 | 4 Jan | 5 Jul | ||||
| 12. | Yellow-legged Gull | 13 | 114 | 15 | 24 | 17 | 11 | 7 | 201 | 49 | 152 | 100 ( 2 Feb) | 100 | 8 | 4 Jan | 5 Jul | ||||
| 13. | Lesser Black-backed Gull | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 ( 4 Jan) | 13 | 1 | 4 Jan | 4 Jan | ||||
| 14. | Larus intermedius | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 ( 2 Feb) | 13 | 1 | 2 Feb | 2 Feb | ||||
| 15. | Laridae sp. | 4 | 8 | 45 | 1 | 0 | 0 | 0 | 58 | 3 | 55 | 45 ( 1 Mar) | 50 | 4 | 4 Jan | 5 Apr | ||||
| 16. | Arctic Skua | 0 | 0 | 0 | 5 | 0 | 0 | 1 | 6 | 1 | 5 | 5 ( 5 Apr) | 25 | 2 | 5 Apr | 5 Jul | ||||
| 17. | Pomarine Skua | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0 | 2 | 2 ( 7 Jun) | 13 | 1 | 7 Jun | 7 Jun | ||||
| 18. | Puffin | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 ( 7 Jun) | 13 | 1 | 7 Jun | 7 Jun | ||||
| 19. | Scopoli's Shearwater | 0 | 0 | 0 | 136 | 72 | 18 | 3 | 229 | 172 | 57 | 136 ( 5 Apr) | 50 | 4 | 5 Apr | 5 Jul | ||||
| 20. | Yelkouan Shearwater | 2 | 5602 | 0 | 17 | 5 | 48 | 0 | 5674 | 3821 | 1853 | 5579 ( 2 Feb) | 75 | 6 | 4 Jan | 7 Jun | ||||
| 21. | Balearic Shearwater | 144 | 941 | 82 | 19 | 143 | 7 | 0 | 1336 | 1075 | 261 | 940 ( 2 Feb) | 88 | 7 | 4 Jan | 7 Jun | ||||
| 22. | Balearic-/Yelkouan Shearwater | 240 | 239 | 442 | 490 | 12 | 0 | 0 | 1423 | 286 | 1137 | 490 ( 5 Apr) | 63 | 5 | 4 Jan | 10 May | ||||
| 23. | Gannet | 1 | 27 | 6 | 5 | 3 | 30 | 3 | 75 | 23 | 52 | 30 ( 7 Jun) | 88 | 7 | 4 Jan | 5 Jul | ||||
| 24. | Cormorant | 3 | 11 | 0 | 10 | 0 | 0 | 0 | 24 | 0 | 24 | 11 (18 Feb) | 38 | 3 | 4 Jan | 5 Apr | ||||
| 25. | Cormorant (p. c. carbo) | 0 | 19 | 11 | 0 | 0 | 0 | 0 | 30 | 6 | 24 | 19 ( 2 Feb) | 25 | 2 | 2 Feb | 1 Mar | ||||
| 26. | Shag | 1 | 8 | 2 | 1 | 26 | 23 | 14 | 75 | 5 | 70 | 26 (10 May) | 100 | 8 | 4 Jan | 5 Jul | ||||
| 27. | Great White Egret | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 ( 5 Apr) | 13 | 1 | 5 Apr | 5 Apr | ||||
| 28. | Swallow | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 5 | 0 | 5 | 3 ( 5 Jul) | 25 | 2 | 10 May | 5 Jul | ||||
| Species | Jan | Feb | Mar | Apr | May | Jun | Jul | Totals | S | N | Maximum | Presence (%) | Presence (days) | First | Last | |||||
| Totals | 467 | 7131 | 702 | 1079 | 344 | 172 | 58 | 9953 | 5608 | 4345 | 100 | 8 | ||||||||
| Observation hours | 2:00 | 3:59 | 2:00 | 2:54 | 2:00 | 2:00 | 2:02 | 16:55 | ||||||||||||
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