• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

The site was identified as important in 2007 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):

Species	Current IUCN Red List Category	Season	Year(s)	Population estimate at site	IBA criteria met
Roseate Tern Sterna dougallii	LC	breeding	2000	2 breeding pairs	C6
Roseate Tern Sterna dougallii	LC	breeding	2006	2 breeding pairs	C6
Common Tern Sterna hirundo	LC	breeding	2000	184 breeding pairs	C6
Common Tern Sterna hirundo	LC	breeding	2006	429 breeding pairs	C6
Arctic Tern Sterna paradisaea	LC	breeding	2000	1,705 breeding pairs	C2, C6
Arctic Tern Sterna paradisaea	LC	breeding	2006	2,726 breeding pairs	C2, C6
Sandwich Tern Thalasseus sandvicensis	LC	breeding	2000	450 breeding pairs	B2, C2, C6
Sandwich Tern Thalasseus sandvicensis	LC	breeding	2006	1,273 breeding pairs	A4i, B1i, B2, C2, C6

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2007).

State (condition of the trigger species' populations)
Scientific name	Common name	Reference population	Actual population	Units	% of population remaining	Result
Sterna dougallii	Roseate Tern	10	2	breeding pairs	20	not assessed
Sterna hirundo	Common Tern	125	429	breeding pairs	100	favourable
Sterna paradisaea	Arctic Tern	1280	2726	breeding pairs	100	favourable
Thalasseus sandvicensis	Sandwich Tern	650	1273	breeding pairs	100	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat level 1	Threat level 2	Timing	Scope	Severity	Result
Biological resource use	fishing & harvesting aquatic resources - unintentional effects: large scale	happening now	whole area/population (>90%)	slow but significant deterioration	high
Energy production and mining	renewable energy	likely in short term (within 4 years)	small area/few individuals (<10%)	slow but significant deterioration	low
Human intrusions and disturbance	recreational activities	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Invasive and other problematic species and genes	problematic native species/diseases - unspecified species	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Natural system modifications	other ecosystem modifications	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high

Response (conservation actions taken for the trigger species and/or their habitats)
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	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	medium

For more information about IBA conservation status, please click here

Protected area (PA)	PA designation	PA area (ha)	Relationship of PA with IBA	Overlap of PA with IBA (ha)
Ynys Mon / Anglesey	Area of Outstanding Natural Beauty	22,010	protected area overlaps with site	59
Ynys Feurig	Site of Special Scientific Interest (UK)	25	protected area overlaps with site	25
The Skerries	Nature Reserve	9	protected area overlaps with site	0
The Skerries	RSPB Reserve	18	protected area contained by site	18
The Skerries	Site of Special Scientific Interest (UK)	17	protected area overlaps with site	17
North Anglesey Marine / Gogledd Môn Forol	Site of Community Importance (Habitats Directive)	324,949	protected area overlaps with site	0
North Anglesey	Heritage Coast	7	protected area overlaps with site	24
Cemlyn Estate	Nature Reserve	51	protected area overlaps with site	0
Cemlyn Bay	Site of Special Scientific Interest (UK)	44	protected area overlaps with site	44
Bae Cemlyn/ Cemlyn Bay	Site of Community Importance (Habitats Directive)	43	protected area overlaps with site	43
Anglesey Terns / Morwenoliaid Ynys Môn	Special Protection Area (Birds Directive)	101,931	protected area contains site	86

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Marine Coastal/Supratidal		-
Marine Intertidal		-

For more information about the IUCN Habitat classification, please click here.

Land-use	Extent (% of site)
not utilised	-

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Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Ynys Feurig, Cemlyn Bay and the Skerries. Downloaded from http://datazone.birdlife.org/site/factsheet/ynys-feurig-cemlyn-bay-and-the-skerries-iba-united-kingdom on 23/09/2023.