Purple sandpipers are the most northerly-wintering wader in the UK, feeding on rocky shores and harbour walls through the harshest weather. Their welfare in winter reflects the quality of rocky intertidal habitats.
Purple sandpiper welfare at wintering sites depends on access to productive rocky intertidal habitats. Disturbance by walkers, dogs and photographers flushing birds from their feeding zone — repeatedly over a winter — reduces feeding time and body condition. As the most cold-tolerant of UK wintering waders, purple sandpipers endure conditions that force other species to move — but severe ice storms can reduce feeding access. Oil pollution at rocky shore sites creates acute welfare crises — sandpipers foraging at the water's edge are highly vulnerable to oiling. Their confiding nature makes them popular with birdwatchers — close approach for photography should be minimised to prevent welfare harm.