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

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
Roseate Tern Sterna dougallii	LC	breeding (2000)	2 pairs	C6
Roseate Tern Sterna dougallii	LC	breeding (2006)	2 pairs	C6
Common Tern Sterna hirundo	LC	breeding (2000)	184 pairs	C6
Common Tern Sterna hirundo	LC	breeding (2006)	429 pairs	C6
Arctic Tern Sterna paradisaea	LC	breeding (2000)	1,705 pairs	C2, C6
Arctic Tern Sterna paradisaea	LC	breeding (2006)	2,726 pairs	C2, C6
Sandwich Tern Thalasseus sandvicensis	LC	breeding (2000)	450 pairs	B2, C2, C6
Sandwich Tern Thalasseus sandvicensis	LC	breeding (2006)	1,273 pairs	A4i, B1i, B2, C2, 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.

State (condition of the trigger species' populations)
Species	Actual vs Reference (units)	% remaining	Result
Roseate Tern Sterna dougallii	2 / 10 (pairs)	20	not assessed
Common Tern Sterna hirundo	429 / 125 (pairs)	100	good
Arctic Tern Sterna paradisaea	2,726 / 1,280 (pairs)	100	good
Sandwich Tern Thalasseus sandvicensis	1,273 / 650 (pairs)	100	good

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Biological resource use	happe­ning now	whole of popul­ation/area (>90%)	slow decline (1–10% over 3 gener­ations)	high
Natural system modifications	happe­ning now	some of popul­ation/area (10–49%)	moderate decline (10–30% over 3 gener­ations)	high
Human intrusions and disturbance	happe­ning now	some of popul­ation/area (10–49%)	moderate decline (10–30% over 3 gener­ations)	high
Invasive and other problematic species and genes	happe­ning now	some of popul­ation/area (10–49%)	moderate decline (10–30% over 3 gener­ations)	high
Energy production and mining	likely in short term (<4 years)	few indivi­duals/small area (<10%)	slow decline (1–10% 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90%) covered by appropriate conservation designation	A management plan exists, but it is out of date or not compre­hensive	Substantive conservation measures are being implemented, but these are not compre­hensive and are limited by resources and capacity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
-	The Skerries	RSPB Reserve (-)	21
1957	Cemlyn Bay	Site of Special Scientific Interest (UK) (IV)	51
1957	The Skerries	Site of Special Scientific Interest (UK) (IV)	20
1961	Ynys Feurig	Site of Special Scientific Interest (UK) (IV)	29
1967	Ynys Mon / Anglesey	Area of Outstanding Natural Beauty (V)	69
1968	Cemlyn Estate	Nature Reserve (V)	26
1983	The Skerries	Nature Reserve (Ia)	7
2017	North Anglesey Marine / Gogledd Môn Forol	Site of Community Importance (Habitats Directive) (UA)	15

Habitat	% of IBA	Habitat detail
Marine Coastal/Supratidal	major (>10)
Marine Intertidal	major (>10)

Land use	% of IBA
not utilised	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ynys Feurig, Cemlyn Bay and the Skerries (United Kingdom). Downloaded from https://datazone.birdlife.org/site/factsheet/ynys-feurig-cemlyn-bay-and-the-skerries-iba-united-kingdom on 23/12/2024.