I woke up this morning out of unpleasant dreams with a headache. The house was chilly as the heating had only kicked on. I didn’t feel well, and the bed was warm. I lingered a little longer than usual under the cosy covers until Minnie the dog starting shuffling about nosily in her “where’s my walk?” routine. Eventually, I got myself up and out to the woods. My mood was sliding toward glum, partly because of how I was feeling, the overcast sky and damp, cold air. The light was not great for photographs, especially compared to yesterday. Then, I looked up at the clouds and noticed it wasn’t uniform.…