The trail passed a very sheltered small pond where numerous Goldfinches and Chaffinches were bathing, then drying off in the thick bushes that surrounded the water. Pity they were all too tucked away for decent photos.
Looking along the trail to the side I could see Rob standing at a viewpoint over another lake, along with a bunch of other birders. We went to join him, and he broke the news that the Sigmonster wasn't working. The camera couldn't detect it, autofocus didn't work. We tried my camera body on it to no avail. So poor Rob had to carry what was now a useless 6kg lump around the rest of the trail.
Back at the visitor centre, Rob dumped the dead Sigmonster in the car and we walked along the riverbank a little way, before it got too cold and dark.