I'd say this is a worn breeding adult Nordmann's Greenshank just beginning the moult into non-breeding plumage. Jizz-wise (tubular-looking bill, shortish-looking tibia) it looks like Nordmann's. The visible feather-patterning amongst all the worn dark feathers suggests Nordmann's to me too. I checked the OBC image database but there are no photos of Nordmann's in this plumage.
David
[ Last edited by ddavid at 8/08/2012 15:16 ]