Well: in the event I couldn't resist a trudge around the Fen! The snow was pretty much undisturbed, and it was fascinating to pick out Otter, Stoat and even Bittern tracks.
Having bumped into Brian near Tower Hide, we carried on around Lackford Run, enjoying the very confiding Robins and Coal Tits as we walked. Several Buzzards and Marsh Harriers tussled with each other, including one well-marked Buzzard that I'm sure is being variously reported as a Rough-leg and a Hen Harrier!
From Reception Hide we enjoyed distant views of Snipe, Water Rail and Bittern: my first at the Fen since Christmas!