Totals Butt of Lewis (O Hebs, Scotland) 2015 - 2024
| Species | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | Totals | Average | Present | Year Maximum | |||||
| 1. | Barnacle Goose | 0 | 0 | 1453 | 139 | 0 | 115 | 0 | 0 | 0 | 0 | 1707 | 213 | 0 | 1453 (2017) | ||||
| 2. | Greylag Goose | 0 | 179 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 179 | 22 | 0 | 179 (2016) | ||||
| 3. | Pink-footed Goose | 8880 | 13004 | 2440 | 3333 | 0 | 1404 | 85 | 500 | 0 | 0 | 29646 | 3706 | 0 | 13004 (2016) | ||||
| 4. | Greenland White-fronted Goose | 0 | 0 | 52 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 52 | 6.5 | 0 | 52 (2017) | ||||
| 5. | Whooper Swan | 0 | 118 | 16 | 41 | 0 | 0 | 0 | 7 | 0 | 0 | 182 | 23 | 0 | 118 (2016) | ||||
| 6. | Shelduck | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.1 | 0 | 1 (2017) | ||||
| 7. | Wigeon | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 1.9 | 0 | 15 (2016) | ||||
| 8. | Red-breasted Merganser | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0.4 | 0 | 3 (2018) | ||||
| 9. | Swift | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0.4 | 0 | 3 (2016) | ||||
| 10. | Oystercatcher | 0 | 0 | 0 | 5 | 0 | 0 | 1 | 0 | 18 | 0 | 24 | 3 | 0 | 18 (2023) | ||||
| 11. | Golden Plover | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 1 | 0 | 8 (2018) | ||||
| 12. | Whimbrel | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 1.5 | 0 | 12 (2017) | ||||
| 13. | Black-tailed Godwit | 0 | 0 | 0 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 1.9 | 0 | 15 (2018) | ||||
| 14. | Turnstone | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 0 | 6 | 0.8 | 0 | 5 (2022) | ||||
| 15. | Knot | 0 | 0 | 325 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 350 | 44 | 0 | 325 (2017) | ||||
| 16. | Redshank | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0.9 | 0 | 7 (2018) | ||||
| 17. | Kittiwake | 240 | 0 | 0 | 12 | 0 | 0 | 1 | 94 | 11 | 0 | 358 | 45 | 0 | 240 (2015) | ||||
| 18. | Great Black-backed Gull | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 0.3 | 0 | 2 (2021) | ||||
| 19. | Arctic Tern | 0 | 0 | 0 | 4 | 0 | 0 | 2 | 1 | 15 | 0 | 22 | 2.8 | 0 | 15 (2023) | ||||
| 20. | Great Skua | 13 | 0 | 0 | 21 | 0 | 0 | 4 | 6 | 2 | 0 | 46 | 5.8 | 0 | 21 (2018) | ||||
| 21. | Pomarine Skua | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.1 | 0 | 1 (2018) | ||||
| 22. | Arctic Skua | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 8 | 0 | 0 | 11 | 1.4 | 0 | 8 (2022) | ||||
| 23. | Guillemot | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 3 | 9 | 0 | 19 | 2.4 | 0 | 9 (2023) | ||||
| 24. | Razorbill | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 314 | 0 | 0 | 321 | 40 | 0 | 314 (2022) | ||||
| 25. | Razorbill/Guillemot | 950 | 0 | 0 | 60 | 0 | 0 | 0 | 0 | 0 | 0 | 1010 | 126 | 0 | 950 (2015) | ||||
| 26. | Black Guillemot | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 1.1 | 0 | 9 (2018) | ||||
| 27. | Puffin | 0 | 0 | 0 | 32 | 0 | 0 | 8 | 0 | 0 | 0 | 40 | 5 | 0 | 32 (2018) | ||||
| 28. | Red-throated Diver | 0 | 0 | 0 | 5 | 0 | 0 | 4 | 0 | 0 | 0 | 9 | 1.1 | 0 | 5 (2018) | ||||
| 29. | Great Northern Diver | 0 | 0 | 0 | 10 | 0 | 0 | 1 | 2 | 0 | 0 | 13 | 1.6 | 0 | 10 (2018) | ||||
| 30. | Storm Petrel | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 3 | 0.4 | 0 | 2 (2021) | ||||
| 31. | Leach's Petrel | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 0.3 | 0 | 2 (2020) | ||||
| 32. | Fulmar | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 30 | 0 | 44 | 5.5 | 0 | 30 (2023) | ||||
| 33. | Sooty Shearwater | 212 | 916 | 1 | 184 | 0 | 568 | 159 | 5065 | 33 | 0 | 7138 | 892 | 0 | 5065 (2022) | ||||
| 34. | Great Shearwater | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 5 | 0 | 0 | 10 | 1.3 | 0 | 5 (2020) | ||||
| 35. | Manx Shearwater | 3 | 0 | 2 | 2837 | 0 | 0 | 6 | 269 | 319 | 0 | 3436 | 430 | 0 | 2837 (2018) | ||||
| 36. | Gannet | 480 | 0 | 0 | 5740 | 0 | 0 | 52 | 303 | 201 | 0 | 6776 | 847 | 0 | 5740 (2018) | ||||
| 37. | Sparrowhawk | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.1 | 0 | 1 (2017) | ||||
| 38. | Hen Harrier | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0.1 | 0 | 1 (2020) | ||||
| 39. | Kestrel | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.1 | 0 | 1 (2018) | ||||
| 40. | Merlin | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.1 | 0 | 1 (2018) | ||||
| 41. | Swallow | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.1 | 0 | 1 (2017) | ||||
| 42. | Starling | 0 | 0 | 0 | 70 | 0 | 0 | 0 | 0 | 0 | 0 | 70 | 8.8 | 0 | 70 (2018) | ||||
| 43. | Redwing | 0 | 0 | 4790 | 60 | 0 | 0 | 0 | 0 | 0 | 0 | 4850 | 606 | 0 | 4790 (2017) | ||||
| 44. | Blackbird | 0 | 0 | 44 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 44 | 5.5 | 0 | 44 (2017) | ||||
| 45. | Fieldfare | 0 | 0 | 610 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 610 | 76 | 0 | 610 (2017) | ||||
| 46. | Meadow Pipit | 0 | 0 | 0 | 1 | 0 | 0 | 3 | 0 | 0 | 0 | 4 | 0.5 | 0 | 3 (2021) | ||||
| 47. | Brambling | 0 | 0 | 12 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 1.6 | 0 | 12 (2017) | ||||
| 48. | finch sp. | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0.1 | 0 | 1 (2017) | ||||
| Other species | |||||||||||||||||||
| 1. | Killer whale | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 0.3 | 0 | 2 (2020) | ||||
| 2. | Bottle-Nosed Dolphin | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 1.3 | 0 | 10 (2018) | ||||
| Species | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | Totals | Average | Present | Year Maximum | |||||
| Totals | 10783 | 14235 | 9761 | 12635 | 0 | 2097 | 348 | 6591 | 639 | 0 | 57089 | 7136 | 0 | ||||||
| Observation hours | 21:00 | 16:25 | 10:00 | 30:05 | 9:55 | 1:30 | 13:57 | 0:45 | 103:37 | 12:57 | |||||||||
