Data Zone
The site was identified as internationally important for bird conservation in 2007 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.
Populations meeting IBA criteria ('key species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Whooper Swan Cygnus cygnus | LC | winter (1999–2000) | 142 individuals | B3 |
| European Shag Gulosus aristotelis | LC | breeding (1999–2002) | 414 breeding pairs | B3 |
| Little Tern Sternula albifrons | LC | breeding (1999–2000) | 53 breeding pairs | B2, C6 |
| Arctic Tern Sterna paradisaea | LC | breeding (2000) | 449 breeding pairs | C6 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2007) is shown below.
| IBA conservation status | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2007 | not assessed | medium | medium |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | unset | good | |
| Pressure (threats to the key species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Human intrusions and disturbance | likely in short term (within 4 years) | some of population/area (10–49%) | slow deterioration (1–10% over 3 generations) | medium |
| Response (conservation actions taken for the key species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area of site (>90%) covered by appropriate conservation designation | A management plan exists, but it is out of date or not comprehensive | Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity | medium |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| - | The Reef, Tiree | RSPB Reserve (-) | 16 |
| 1963 | Hough Bay and Balevullin Machair | Site of Special Scientific Interest (UK) (IV) | 2 |
| 1993 | The Reef, Tiree | Nature Reserve (Ia) | 16 |
| 1999 | Ceann A' Mhara to Loch A' Phuill | Site of Special Scientific Interest (UK) (IV) | 9 |
| 2001 | Sleibhtean agus Cladach Thiriodh | Site of Special Scientific Interest (UK) (IV) | 92 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | minor (<10) |
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Sleibhtean Agus Chladach Thiriodh (United Kingdom). Downloaded from
https://datazone.birdlife.org/site/factsheet/sleibhtean-agus-chladach-thiriodh-iba-united-kingdom on 13/01/2025.