Marwick Head

Site of Special Scientific Interest · 59.0997, -3.3554

Also within

Orkney County

Condition (NatureScot)

Unfavourable No Change (3)
UnitFeatureConditionArea (ha)Assessed
F1 Guillemot (Uria aalge), breeding Unfavourable No Change 2026-03-31
F2 Kittiwake (Rissa tridactyla), breeding Unfavourable No Change 2026-03-31
F3 Seabird colony, breeding Unfavourable No Change 2026-03-31

Climate exposure

This is about exposure to a nationwide pressure this habitat type carries — not a verdict on this site's own management.

Coastal

Coastal habitats are exposed to sea-level rise and storm erosion. Where hard sea defences sit behind them, there's nowhere landward to retreat to — a squeeze that keeps compressing the habitat no matter how well it's managed.

Geology & landscape

Rock Type: Sandstone

Landscape processes: Coastal

Birds & fish recorded

Birds

SpeciesSeason
fulmar Breeding
guillemot Breeding
herring gull Breeding
kittiwake Breeding
puffin Breeding
razorbill Breeding

Description

Marwick Head Marwick Head Site of Special Scientific Interest is on the west coast of Orkney Mainland between Bay of Skaill and the Brough of Birsay. The site supports breeding seabirds. The geology of this site features sandstone cliffs which provide excellent nesting locations for many sea bird species. The site accommodates one of the three largest seabird colonies in Orkney. The breeding Guillemot Uria aalge and Kittiwake Rissa tridactyla are of national importance with 4% and 2% respectively of the British and Irish breeding populations. The breeding seabird colony is also of national importance and the species in the area include; Fulmar Fulmarus glacialis, Razorbill Alca torda, Puffin Fratercula arctica, Shag Phalacrocorax aristotelis, Jackdaw Coloeus monedula and herring gull Larus argentatus.

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
jackdaw Coloeus monedula LC (Breeding) bird-corvid corvidae
fulmar Fulmarus glacialis CR (Breeding) bird-fulmar procellariidae
herring gull Larus argentatus EN (NonBreeding), EN (Breeding) bird-gull laridae
kittiwake Rissa tridactyla EN (Breeding) bird-gull laridae