The Wash National Nature Reserve is a protected area located on the east coast of England, primarily in the counties of Norfolk and Lincolnshire. It encompasses a large estuary, mudflats, and salt marshes, providing a vital habitat for various wildlife species, particularly birds. The reserve is known for its rich biodiversity and is an important site for birdwatching, attracting both migratory and resident species. Established in 1983, The Wash is part of the Ramsar Convention on Wetlands, highlighting its significance for conservation. The area is also crucial for local fisheries and supports traditional farming practices, contributing to the region's economy and cultural heritage.