Aerial image of Southend Pier, the longest pleasure pier in the world, and estuary of the River Thames, Southend-on-Sea, Essex, England, United Kingdom, Europe

Migratory Starlings on telephone wires at Thames Estuary. Avian Flu (Bird Flu) could be brought to Britain from Europe by migrating birds.

Migratory Starlings and wood pigeons at Thames Estuary. Avian Flu (Bird Flu) could be brought to Britain from Europe by migrating birds.

Migratory Starlings on telephone wires at Thames Estuary. Avian Flu (Bird Flu) could be brought to Britain from Europe by migrating birds.

Migratory Lapwings and waders at the Thames Estuary. It is feared that Avian Flu (Bird Flu) could be brought to Britain from Europe by migrating birds.

Migratory Lapwings and waders at Thames Estuary. It is feared that Avian Flu (Bird Flu) could be brought to Britain from Europe by migrating birds.

Migratory Lapwings at Thames Estuary. It is feared that Avian Flu (Bird Flu) could be brought to Britain from Europe by migrating birds.

Migratory Starlings at Thames Estuary. It is feared that Avian Flu (Bird Flu) could be brought to Britain from Europe by migrating birds.

Traditional wooden Smack fishing boats off Brightlingsea, Essex, UK.

Traditional wooden Smack fishing boats off Brightlingsea, Essex, UK.

The Labworth Restaurant, Canvey Island, Thames Estuary, off South East Essex, England, United Kingdom, Europe

Rhine, Meuse And Scheldt Delta, Netherlands, True Colour Satellite Image. True colour satellite image of the Rhine-Meuse-Scheldt delta in the Netherlands