Duddon Estuary

Site overview: This site is located north-west of Morecambe Bay on the coast of Cumbria in north-west England. This is where the River Duddon and the smaller Kirkby Pool open up into the Irish Sea. It is a really important area for large numbers of birds that either come here to live during winter (just under 78,000!), or pass through whilst migrating. This includes Sandwich terns, knots, pintails and redshanks.

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


54° 11' 13" North,
3° 15' 19" West

Surface Area

67.84 km2
(26.19 mi.2 )

Iconic features protected by this site


  • Tidal rivers, Estuaries, Mud flats, Sand flats, Lagoons (including saltwork basins)
  • Salt marshes, Salt pastures, Salt steppes


  • Waterfowl assemblage


  • Common redshank (Tringa totanus) (Regularly occurring migratory species)
  • Sandwich tern (Sterna sandvicensis) (Annex I (species))
  • Red knot (Calidris canutus) (Regularly occurring migratory species)
  • Northern pintail (Anas acuta) (Regularly occurring migratory species)