Large colonies found at St Kilda, Fair Isle, Mingulay, Canna and St Abbs.
Forms large, noisy colonies.
Food: Small fish, especially sandeels and capelin. Also scavenges and takes fishery discards
Nest Site: On cliffs on islands and the mainland. There is a tendency to select vertical or over-hanging rock faces. The nests are of compacted mud, grass or seaweed, adhering to sometimes impossibly small ledges.
Breeding: Mid May to mid June. Normally 2 eggs are laid.
Wintering: Disperses across the North Atlantic, occasionally reaching Canada.
Distribution: Scotland, Spain, Portugal, France, Ireland, Iceland, Faeroes, Norway and Sweden.
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