EACH SPRING I RETURN TO A favourite spot, camera in hand. It’s a place I first visited nearly 40 years ago, and I stood in awe then just as I do today. That place is the most northerly point in Britain: Hermaness National Nature Reserve in the Shetland Islands, which hums in spring and summer with gannets and auks breeding on its spectacular cliffs. Hermaness is just one of the seabird cities dotted around our coastline, some of
