• Summary
• Text account
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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
Corncrake Crex crex	LC	breeding	2003	49 breeding pairs	A1, B2, C1, C6

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

Threats to the site (pressure)
Threat Level 1	Threat Level 2	Timing	Scope	Severity	Result
Agricultural expansion and intensification	livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	dams & water management/use - abstraction of ground water (unknown use)	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	other ecosystem modifications	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Residential and commercial development	housing and urban areas	likely in short term (within 4 years)	small area/few individuals (<10%)	slow but significant deterioration	low

Condition of key/trigger populations (state)
Scientific	Common	TargetPop	ActualPop	Units	Remaining	Result
Crex crex	Corncrake	43	49	breeding pairs	100	favourable

Conservation actions taken at site (response)
Conservation Designation	Management Planning	Conservation Action	Result
Some of site covered (10-49%)	No management plan exists but the management planning process has begun	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	low

For more information about IBA monitoring please click here

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Port of Ness	Site of Special Scientific Interest (UK)	5	protected area overlaps with site	0
Ness and Barvas; Lewis	Special Protection Area (Birds Directive)	648	protected area contained by site	649
Loch Stiapavat	Site of Special Scientific Interest (UK)	35	protected area contained by site	0
Loch Stiapabhat	Local Nature Reserve	15	protected area contained by site	0
Loch Na Muilne	Nature Reserve	36	protected area overlaps with site	0

IUCN Habitat	Habitat detail	Extent (% of site)
Forest		-
Shrubland	Heathland	-
Grassland		-
Wetlands (inland)	Rivers and streams	-
Artificial/Terrestrial	Arable land	-

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
agriculture	-

For further information about the land use classification please click here.

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Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: West Coast, Lewis (Corncrake). Downloaded from http://www.birdlife.org on 17/08/2022.