Baker's Island is an island in Langstone Harbour

Langstone Harbour

Langstone Harbour is an inlet of the English Channel in Hampshire, sandwiched between Portsea Island to the south and west, Hayling Island to the south and east, and Langstone to the north. Geographically it is a ria....

. It is 400 metres (437.4 yd) long and up to 300 metres (328.1 yd) wide but only rises to a little over 2 metres (7 ft) above Ordnance Datum

Ordnance Datum

In the British Isles, an Ordnance Datum or OD is a vertical datum used by an ordnance survey as the basis for deriving altitudes on maps. A spot height may be expressed as AOD for "above ordnance datum". Usually mean sea level is used for the datum...

. Mesolithic and neolithic flintwork has been found on the island along with bronze age and Romano-British pottery. There are a number of structures on the island including the remains of a flint walled building and five 5m by 1.5m brick shelters believed to be part of a World War Two starfish decoy site

Starfish site

Starfish sites, or bombing decoy sites, were deliberately created simulations of burning towns that were constructed in Britain during World War II. The name came from the code name for one of the sites, "Starfish", itself from the original code, SF, for Special Fire.Starfish sites were used to...

. In 1978 the island along with the other islands in Langstone harbour was acquired by the Royal Society for the Protection of Birds

Royal Society for the Protection of Birds

Bird Notes and News was first published in April 1903.The title changed to 'Bird Notes' in 1947. In the 1950s, there were four copies per year . Each volume covered two years, spread over three calendar years...

who turned it into a bird sanctuary. Since that time unauthorised landings have been forbidden.