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Greater Black Backed Gull
Greater Black Backed Gull
Greater Black Backed Gull sites cared for by the Trust
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As well as Canna, Greater Black Backed Gulls can be found at Unst, Fair Isle, St Kilda, Mingulay, Staffa, Iona and Murray's Isles.

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Never numerous, this predatory gull pays close attendance to other seabird colonies.

Small numbers breed at several properties, though never more that 100 pairs. A predator, the Greater Black Backed Gull depends largely on other seabirds during the breeding season.


Wide variety of food, voracious predator, scavenger and food pirate. Kills birds such as Manx Shearwater at night on breeding colonies.

Nest site

Small islands and islets, tops of sea stacks. Mound of seaweed and other vegetation.


Mid April to mid June where they 2-3 eggs.


Resident in the UK.


UK, southern Ireland, Faeroes, Iceland, Norway, Sweden, Finland, Russia.

Other Gull family birds at Trust sites