A dawn walk with the Mrs in weak, milky sunshine and sub-zero temperatures along the beach and southern flank of the Brigg, where pretty much everything was frozen - including rockpools, seaweeds, flood run-off and the actual beach - but not the Purple Sandpipers and Sanderlings (pictured), for whom it's clearly just another day on their winter holidays.
Sanderling tracks in the sand - note lack of hind toe, a special adaptation that turns them into the superheroes of the shoreline
