As I work at editing a thesis this morning, I can hear the distinctive song of a grey warbler outside the window. This tiny bird is endemic in New Zealand and there is a huge population of them all over the country. Yet I have never seen one. Hence the use of this wonderful Forest & Bird image instead of a pic of my own. Apparently it is only the male riroriro that sings so beautifully – amazing that such a loud sound can emanate from such a small body. It is delightful to hear and a welcome accompaniment to my work.