Thames Estuary and Marshes SPA
This site is located on the south side of the Thames Estuary in southern England. The marshes extend for about 15 km along the south side of the estuary. The estuary is home to large numbers of wintering waterbirds, including grebes, geese, ducks and waders. The site is also important in spring and autumn migration periods.
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 March 2000
Surface Area48.02 km2 (18.54 mi.2)
Perimeter144.20 km (89.60 mi.)
Coordinates (central point)51° 28' 34" North, 0° 35' 7" East
Ringed plover (Charadrius hiaticula)
A small, dumpy, short-legged wading bird that breed on beaches around the coast.
Important areas where a number of waterfowl species occur in significant numbers.
Common redshank (Tringa totanus)
As this bird’s name suggests, its’ most distinctive features are its’ bright orange-red legs.
Red knot (Calidris canutus)
A dumpy, short-legged, stocky wading bird that depends on the rich source of worms and shellfish in estuaries. Large numbers come to the UK in the winter.
Dunlin (Calidris alpina alpina)
The commonest small wading bird found around UK shores with a distinctive black belly in the summer.
Black-tailed godwit (Limosa limosa islandica)
A large wading bird with a very distinctive long beak.
Grey plover (Pluvialis squatarola)
A widely distributed shorebird that prefers sandy and muddy estuaries.
Hen harrier (Circus cyaneus)
The UK’s most intensively persecuted bird of prey. While they spend the summer on heaths and moors they head out to some coastal marhes in winter.
Pied avocet (Recurvirostra avosetta)
A distinctively-patterned black and white wading bird with a long up-curved beak.
Did you know?…
An area over 9 times the size of Wales is now in marine protected areas in the UK, but less than 1% is considered by MCS scientists to be well managed
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 500,000 records of undersea species and habitats have been collected by volunteer Seasearch divers