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 ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Hen Harrier Circus cyaneus | LC | resident (1999–2004) | 11 pairs | C6 |
| Merlin Falco columbarius | LC | resident (1996–2000) | 12 pairs | C6 |
| Peregrine Falcon Falco peregrinus | LC | resident (2002) | 10 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 assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2007 | poor | medium | medium |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Circus cyaneus | 11 / 14 (pairs) | 79 | moderate | ||
| Merlin Falco columbarius | 12 / 15 (pairs) | 80 | moderate | ||
| Falco peregrinus | 10 / 18 (pairs) | 56 | poor | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Agricultural expansion and intensification | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Energy production and mining | likely in long term (>4 years) | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Human intrusions and disturbance | happening now | few individuals/small area (<10%) | slow decline (1–10% over 3 generations) | low |
| Biological resource use | past (and unlikely to return) and no longer limiting | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>90%) covered by appropriate conservation designation | A management plan exists, but it is out of date or not comprehensive | Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity |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 |
|---|---|---|---|
| - | Lake Vyrnwy | RSPB Reserve (-) | 27 |
| 1951 | Snowdonia | National Park (V) | 17 |
| 1976 | West Llangynog Slate Mine | Site of Special Scientific Interest (UK) (IV) | <1 |
| 1977 | Lake Vyrnwy | Nature Reserve (IV) | 27 |
| 1983 | Berwyn | Site of Special Scientific Interest (UK) (IV) | 100 |
| 1985 | Bryniau Clwyd a Dyffryn Dyfrdwy/Clwydian Range and Dee Valley | Area of Outstanding Natural Beauty (V) | 10 |
| 1985 | Penarth Quarry | Site of Special Scientific Interest (UK) (IV) | <1 |
| 1994 | Y Berwyn | National Nature Reserve (IV) | 33 |
| 2000 | Pistyll Rhaeadr | Site of Special Scientific Interest (UK) (IV) | <1 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Grassland | - | |
| Shrubland | - | Heathland |
| Wetlands (inland) | - | Blanket bogs; Water fringe vegetation |
| Land use | % of IBA |
|---|---|
| agriculture | - |
| forestry | - |
| tourism/recreation | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Berwyn (United Kingdom). Downloaded from
https://datazone.birdlife.org/site/factsheet/berwyn-iba-united-kingdom on 23/12/2024.