Ailsa Craig SPA
Ailsa Craig is a cone-shaped granitic island, rising to 338m, situated in the outer part of the Firth of Clyde, western Scotland. Besides being home to Europe’s biggest gannet colony and an increasingly significant number of puffins the island also boasts rock which is said to be perfect for the manufacture of curling stones! Two thirds of all curling stones are reported to be made from Ailsa Craig granite.
MPA TypeSpecial Protection Area
Special Protection Areas (SPAs) are strictly protected sites designated uner European legislation. They are established to protect rare and vulnerable birds and for regularly occurring migratory species.
Designation date1 April 1990
Surface Area27.59 km2 (10.65 mi.2)
Perimeter21.78 km (13.54 mi.)
Northern gannet (Morus bassanus)
Adult gannets are large and bright white seabirds with black wingtips. They feed by flying high and circling before plunging into the sea. They breed in significant numbers at only a few localities.
Black-legged kittiwake (Rissa tridactyla)
A small cliff nesting seabird named for it its nasal “ki-ti-waak”” callnotes. The population is declining in some areas
Seabird assemblage (Seabird assemblage)
Important areas where a number of seabird species occur in significant numbers.
Common guillemot (Uria aalge)
One of the most common birds breeding on sheer, crowded cliffs known as ‘seabird cities’. This seabird only comes to land to breed and spends the rest of its life at sea.
Herring gull (Larus argentatus)
Herring gulls are large, noisy gulls found throughout the year around our coasts and inland around rubbish tips, fields, large reservoirs and lakes, especially during winter. Though they seem to be everywhere, populations continue to decline.
Lesser black-backed gull (Larus fuscus)
The UK is home to 40% of the world’s population of this medium sized gull and there are serious concerns about declines in parts of its range.
Did you know?…
Over 500,000 records on undersea habitats and species have been collected by volunteer Seasearch divers providing significant evidence for inshore ‘marine protected areas’
Over 170 parliamentarians from across the political spectrum signed up to our Marine Charter calling for a network of ‘marine protected areas’ in UK Seas
Over half a million people have voiced their support for ‘marine protected area’ designation in the UK through our campaigns
The future of fisheries is being decided
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