High, rocky quartzite cliffs on a well-defined peninsula to the north of Dunfanaghy, on the County Donegal coast.
This site contains an internationally important colony of breeding seabirds. Other species breeding in numbers of national importance include Fulmarus glacialis (1,000 pairs), Rissa tridactyla (4,500 pairs), Uria aalge (5,000 birds) and Cepphus grylle (25 birds).
BirdLife International (2018) Important Bird Areas factsheet: Horn Head cliffs. Downloaded from http://www.birdlife.org on 10/12/2018.