This is a group of five offshore islands with outlying rocks and reefs, 3 km south-west of the Mullet peninsula in County Mayo.
These islands support important numbers of wintering geese and breeding seabirds. Seabirds breeding in numbers of national importance are Phalacrocorax carbo (185 pairs, 1981), Fulmarus glacialis (500 pairs, 1981), Larus canus (20-50 pairs, 1981) and Larus argentatus (300-400 pairs, 1981).
BirdLife International (2020) Important Bird Areas factsheet: Duvillaun Islands. Downloaded from http://www.birdlife.org on 28/11/2020.