Marwick Head

IBA Justification

Year of most recent IBA criteria assessment: 2007

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population at site IBA criteria triggered
Common Murre Uria aalge LC breeding 2004 10,476 individuals C7

Note: The current IUCN Red List category may differ from the category that was valid at the time of IBA criteria assessment.

For more information about the IBA criteria, please click here

IBA Conservation

IBA conservation status - summary
Year of assessment (most recent) Threat (pressure) Condition (state) Action (response)
2007 high very unfavourable low
Was the whole site assessed? yes Condition (state) assessed by population
Accuracy of information good

Threats to the site (pressure)
Threat level 1 Threat level 2 Timing Scope Severity Result
Climate change and severe weather habitat shifting and alteration happening now majority/most of area/population (50-90%) moderate to rapid deterioration high

Condition of the site (state), by species
Scientific name Common name Reference population Actual population Units % of population remaining Result
Uria aalge Common Murre 36418 10476 individuals 29 very unfavourable
Species group - seabirds A4iii 26047 8887 breeding pairs 35 very unfavourable

Conservation actions taken at the site (response)
Protected-area designation Management planning Other conservation 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90%) covered by appropriate conservation designation A management plan exists but it is out of date or not comprehensive Not assessed low
For more information about IBA conservation status, please click here

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Marwick Head RSPB Reserve 10 protected area overlaps with site 5
Marwick Head Marine Protected Area (OSPAR) 0 protected area overlaps with site 0
Marwick Head Nature Reserve 10 protected area overlaps with site 0
Marwick Head Site of Special Scientific Interest (UK) 9 protected area overlaps with site 9
Marwick Head Special Protection Area (Birds Directive) 476 protected area contains site 9


IUCN Habitat Habitat detail Extent (% of site)
Grassland -
Marine Coastal/Supratidal -
For further information about the IUCN habitat classification, please click here.

Land use

Land-use Extent (% of site)
nature conservation and research -
For further information about the land-use classification, please click here.

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Marwick Head. Downloaded from on 28/05/2023.