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Location United Kingdom, Wales
Central coordinates 4o 1.70' West  53o 19.12' North
IBA criteria B1i, C3
Area 31 ha
Year of IBA assessment 2007

Royal Society for the Protection of Birds

Site description Rocky island on the north Wales coast, important for breeding Phalacrocorax carbo.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Great Cormorant Phalacrocorax carbo breeding  2001-2005  542 breeding pairs  good  B1i, C3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Anglesey Area of Outstanding Natural Beauty 21,999 protected area contains site 31  
Puffin Island (Ynys Seiriol) Birds Directive 31 is identical to site 31  
Puffin Island - Ynys Seiriol Site of Special Scientific Interest 32 is identical to site 31  


IUCN habitat Habitat detail Extent (% of site)
Coastline Rock stacks and islets; Sea cliffs and rocky shores  major

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Ynys Seiriol/Puffin Island. Downloaded from on 31/10/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife