Snettisham RSPB:

A must-visit destination for birders, this is the place to witness two of the UK’s great wildlife spectacles. On big tides, as water covers the vast mudflats of The Wash, tens of thousands of wading birds are pushed off their feeding grounds and onto the roost banks and islands in front of the RSPB hides. In mid-winter, a dawn or dusk visit may reward you with the sight of thousands of pinkfooted geese flying from their overnight roosts inland to feed. Large numbers of black-headed gulls and smaller numbers of common terns nest on the reserve in summer, when there is a spectacular display of shingle flowers. For more info see here.

15 miles (23 minute drive) from West Heath  PE31 7RA