The site was identified as internationally important for bird conservation in 2015 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.
| Species |
Red List |
Season (year/s of estimate) |
Size |
IBA criteria |
| European Storm-petrel Hydrobates pelagicus |
LC |
breeding (1991) |
50,000–100,000 breeding pairs |
A4ii, B1ii, B3 |
| Leach's Storm-petrel Hydrobates leucorhous |
VU |
breeding (1991) |
167,600–224,600 breeding pairs |
A4ii, B1ii |
| Northern Fulmar Fulmarus glacialis |
LC |
breeding (2006–2008) |
38,377–38,984 nests |
B2 |
| Manx Shearwater Puffinus puffinus |
LC |
breeding (1991) |
8,000–10,000 breeding pairs |
A4ii, B1ii, B3 |
| Northern Gannet Morus bassanus |
LC |
breeding (2005–2008) |
12,085 nests |
A4ii, B1ii, B3 |
| Black-legged Kittiwake Rissa tridactyla |
VU |
breeding (2006–2008) |
50,185 nests |
A4i, B1i, B2 |
| Atlantic Puffin Fratercula arctica |
VU |
breeding (2010) |
649,300–1,020,900 breeding pairs |
A1, A4ii, B1ii, B2 |
| Razorbill Alca torda |
LC |
breeding (2006–2008) |
2,248–3,502 breeding pairs |
B2 |
| Common Murre Uria aalge |
LC |
breeding (2005–2007) |
31,129–34,902 breeding pairs |
A4ii, B1ii, B2 |
| A4iii Species group - seabirds |
n/a |
breeding (2005–2010) |
785,806–1,158,013 breeding pairs |
A4iii |
