Tweet of the Day : John Murray : 9781473639300 : 1473639301 : 08 Sep 2016 : Imagine a jazz musician, improvising on a theme. Then imagine that he is able to play half a dozen instruments - not one after another, but almost simultaneously, switching effortlessly between instruments and musical styles with hardly a pause for breath. If you can countenance that, you are halfway towards appreciating the extraordinary song of the nightingale . . . Wherever we are, there are birds. And wherever there are birds, there is birdsong. It's always a pleasure (and a relief) to hear sounds which prove the world's still spinning: whether it's the sighing of migrating redwings on a damp October night, the twitter of swallows fresh in from South Africa in April or the call of the cuckoo in May. Based on the scripts of BBC Radio 4's beloved year-long series, and distilling two lifetimes' knowledge, insight and enthusiasm into these pages, Brett Westwood and Stephen Moss take you month by month through