Last Thursday, my wife told me that she had seen an 'interesting' bird in the back garden. "It was grey", she said, '"with white sides and showed some red when it flew". Although she is not a birdwatcher, her knowledge of common garden birds is pretty good, so I was intrigued. A non-birder is never specific, and their colour descriptions can be misleading - was her 'red' in fact 'bright chestnut'? Exactly where on the sides was the area of white? After showing her images of such species as Fieldfares, Bramblings and Waxwings, she was adamant that these were not her mystery bird. It didn't re-appear so I then forgot about it. Yesterday I returned home from work and, after a few minutes, she mentioned that the 'interesting' bird had been back again. She had seen it not only in the back garden but also hopping about on the front lawn. This time she could be more specific. It was smaller than a thrush (but larger than a finch), w...