Over the years we have been blessed with many beautiful visitors to our bird feeders. Blue and Great Tits and Goldfinches are year round guests. Coal Tits are also regular visitors all be in in much smaller numbers. The winter, however, seems to be the season when we can hope for something a little special. Last year, for example, was the year of the Brambling. For six wonderful weeks at the end of winter a flock of ten or so of these delightful northern visitors were almost every present under our feeders. Four years ago a spell of hard cold winter weather drove Siskins and Redpolls to our feeders in unprecedented numbers. This year seems to be the year of the Greenfinch. While they are present every year this winter has been notable for their exceptional numbers. At any one time we have had up to twenty finches in and around the feeders. I find this very heartening as their numbers national have been greatly diminished by the protozoal parasite...