Currawong chorus

For the past couple of weeks the pied currawongs have been making a splendid chorus (check the sound file here).

They seem to love this time of the year – the clear blue skies and the temperatures starting to drop. They are around at other times of the year but generally as solitary birds that only occasionally are heard to sing. But recently they have been congregating in groups of up to a dozen, chasing each other from tree to tree and caroling (or is it arguing?) continuously in a glorious array of sounds.