The Song Thrush is the master of the dawn chorus at this time of the year. The Blackbird tends to favour the evening chorus, presumably because of child-rearing duties.
This Thrush uses repetition as the main theme of its song. A verse consists of short passages of repeated notes, perhaps three of five of them at a time. Each verse itself appears in a repeated cycle and it is very challenging to try and spot the pattern of cycling phrases. At dawn this morning I had a go, but soon lost the trail. So I have decided that careful sound recording is the only way to do it. Mobile phones have a very basic facility for recording, so this is my next challenge – hopefully more analysis in future blog entries.