Monach Islands

IBA Criteria

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 estimate IBA Criteria Triggered
Barnacle Goose Branta leucopsis LC winter 1984-1988 760 individuals B1i, B2, C2
Black Guillemot Cepphus grylle LC breeding 2002 819 individuals B1ii, B2, C3

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2007 high favourable low
Was the whole site covered? Yes 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 whole area/population (>90%) slow but significant deterioration high

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Cepphus grylle Black Guillemot 425 819 individuals 100 favourable

Conservation actions taken at site (response)
Conservation Designation Management Planning 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90%) covered by appropriate conservation designation A management plan exists but it is out of date or not comprehensive Very little or no conservation action taking place low
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Monach Isles Marine Protected Area (OSPAR) 6,200 protected area overlaps with site 0
Monach Isles Special Protection Area (Birds Directive) 600 is identical to site 594
Monach Isles National Nature Reserve 580 is identical to site 577
Monach Isles Nature Conservation Marine Protected Area 6,171 protected area overlaps with site 0
Monach Isles Site of Special Scientific Interest (UK) 600 protected area overlaps with site 577
Monach Islands Site of Community Importance (Habitats Directive) 3,647 protected area contains site 594
Monach Islands Marine Protected Area (OSPAR) 0 protected area overlaps with site 0


IUCN Habitat Habitat detail Extent (% of site)
Grassland Humid grasslands, Machair -
Wetlands (inland) Fens, transition mires and springs -
Coastline Sea cliffs and rocky shores, Inland sand dunes -
Marine Coastal/Supratidal -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Monach Islands. Downloaded from on 27/03/2023.