Birds live in their own secret world.
Birds are beautiful little creatures that have the gift of flight - they look down upon us from the trees, rooftops, the church spire and the weather vane, before deciding whose garden to visit this day. They have a marvellous navigational aid allowing them to migrate and then return. They have a short life span. The sparrow's for one, so ordinary with its mousy feathers, is only 10 months.
This then, is the raison d'être for writing this book.