I was right on the bird as soon as I got there as there were several birders all looking in the same direction. I took this video to record the marvellous sound of it singing.
The bird would disappear amongst the tall vegetation for periods of time and then reappear calling from somewhere else. Most of the time it was only visible from the neck upwards, but I did manage one shot of it out in the open.
At one point it seemed to be getting very familiar with a red grouse that wandered across the paddock, but its advances were rejected.