Titchwell is an important coastal RSPB reserve in Norfolk and is largely man-made.
In 2004, it attracted 110,000 visitors (an increase of 6% over the previous year).
Minsmere is one of the RSPB's best known reserves, located on the Suffolk coast.
The number of visitors to Minsmere was 87,200 in 2004 and 80,000 in 2003.
Both of these sites are located in relatively rural areas and attract visitors from considerable distances.
The visitor numbers to both Titchwell and Minsmere suggest that the number of bird watchers attracted to a new site in the United Kingdom offering a wide range and large number of birds could be in the region of 80,000 to 100,000.
Both Titchwell and Minsmere are in relatively rural locations (Norfolk/Suffolk) which highlights the potential number of visitors that could be attracted closer to main centres of population.