Purple Sandpipers

I went back to Birsay on the slim chance of finding a lens filter that I appear to have lost. Not even sure that that is where it was lost but it definitely wasn't found there.
Lots of purple sandpiper and turnstone on the Birsay Bay shore and other waders, plus 19 snow bunting and 3 shelduck, the first shelduck I have seen this year. See extras.