Bird-nesting islands were constructed from dredged mud in the 1930s. A total of three islands were built, but they all eventually vanished. However, one of the islands was rebuilt, resulting in a 4.5-acre landmass.

Further details about this project are available from the source. The outcome of the rebuilding effort is known, but additional information about the islands and their history can be found in the original report.

The source provides more information about the bird-nesting islands, including their construction and fate, for those interested in learning more about this project.