Illaunmaistir (Oilean Maistir)

Year of compilation: 2000

Site description
A small, steep-sided, inaccessible rocky island (rising to 100 m) and surrounding waters, located just off the cliff-dominated north coast of County Mayo, 19 km west of Ballycastle.

Key biodiversity
This is an important site for breeding seabirds; additional species include Fulmarus glacialis (10 pairs), Puffinus puffinus (10-100 pairs), Phalacrocorax aristotelis (>10 pairs) and Cepphus grylle (5 pairs).

Pressure/threats to key biodiversity
The island (5 ha) is a reserve owned by BirdWatch Ireland. Fishing in surrounding waters may deplete the prey stock of seabirds, with implications for their breeding success.

Protected areas
National None International High165 ha of IBA covered by Special Protection Area (Illaunmaistir, 165 ha).

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Illaunmaistir (Oilean Maistir). Downloaded from on 02/10/2022.