Ailsa Craig

Site overview: Ailsa Craig is a cone-shaped granitic island, rising to 338m, situated in the outer part of the Firth of Clyde, western Scotland. These cliffs provide nesting sites for a range of seabird species, including one of the largest colonies of gannets in the world

Designation Status
Last Updated
6 June 2017
MPA Type
Special Protection Area
MPA Purpose
areas of the most important habitat for rare (listed on Annex I to the Directive) and migratory birds within the European Union


55° 15' 12" North,
5° 6' 51" West

Surface Area

27.59 km2
(10.65 mi.2 )

Iconic features protected by this site


  • Marine areas, Sea inlets


  • Northern gannet (Morus bassanus) (Regularly occurring migratory species)
  • Black-legged kittiwake (Rissa tridactyla) (Regularly occurring migratory species)


  • Seabird assemblage


  • Common guillemot (Uria aalge) (Regularly occurring migratory species)
  • Herring gull (Larus argentatus) (Regularly occurring migratory species)
  • Lesser black-backed gull (Larus fuscus) (Regularly occurring migratory species)