Forth Islands

Site of Special Scientific Interest · 56.0738, -2.7833

Also within

East Lothian County

Condition (NatureScot)

Unfavourable Declining (1) Favourable (2)
UnitFeatureConditionArea (ha)Assessed
F1 Cormorant (Phalacrocorax carbo), breeding Unfavourable Declining 2019-01-30
F2 Puffin (Fratercula arctica), breeding Favourable 2019-01-30
F3 Seabird colony, breeding Favourable 2019-01-30

Geology & landscape

Landscape processes: Volcanic / Igneous

Birds & fish recorded

Birds

SpeciesSeason
cormorant Breeding
eider Breeding
fulmar Breeding
gannet Breeding
great black-backed gull Breeding
guillemot Breeding
herring gull Breeding
kittiwake Breeding
lesser black-backed gull Breeding
puffin Breeding
razorbill Breeding

Description

FORTH ISLANDS This site comprises Craigleith, the Lamb and Fidra, three volcanic islands lying up to 1.2km offshore from North Berwick, which together hold a nationally important seabird colony. Craigleith supports the largest puffin Fratercula arctica colony in the Lothian area while Fidra and the Lamb have the only breeding cormorant Phalacrocorax carbo colony in the region. Fulmar Fulmarus glacialis, shag Phalacrocorax aristotelis, razorbill Alca torda and guillemot Uria aalge also nest on the three islands as well as great black-backed gull Larus marinus, lesser black-backed gull Larus fuscus, herring gull Larus argentatus and kittiwake Rissa tridactyla. Together, these islands form the second largest seabird colony in the region. The total number of birds nesting is only rivalled by the gannet colony on the Bass Rock. The islands also support breeding eider Somateria mollissima and, while these are not notified features, the numbers on the islands are important.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
Phalacrocorax aristotelis Not listed in GB list bird phalacrocoracidae
razorbill Alca torda LC (Breeding) bird-auk alcidae
puffin Fratercula arctica CR (Breeding) bird-auk alcidae
guillemot Uria aalge LC (Breeding) bird-auk alcidae
eider Somateria mollissima VU (NonBreeding) bird-duck anatidae
shag Gulosus aristotelis VU (Breeding) bird-frigate fregatidae
gannet Morus bassanus LC (Breeding) bird-frigate fregatidae
cormorant Phalacrocorax carbo NT (Breeding) bird-frigate fregatidae
fulmar Fulmarus glacialis CR (Breeding) bird-fulmar procellariidae
herring gull Larus argentatus EN (NonBreeding), EN (Breeding) bird-gull laridae
lesser black-backed gull Larus fuscus DD (Breeding) bird-gull laridae
great black-backed gull Larus marinus EN (NonBreeding), CR (Breeding) bird-gull laridae
kittiwake Rissa tridactyla EN (Breeding) bird-gull laridae