However, three years on and we hadn't seen another Siskin in the garden at all. However, at a local country park, whilst trying to photograph some Redpolls, I found I had got a few presentable Siskin pics too such as the one on the left, taken in March 2009.
Seven more years went by before we had a sufficiently close encounter with a male in full breeding plumage, again at a local reserve. In fact it seemed like every feeder at the reserve was besieged by Siskins. Perhaps I need to change my seed mix!
Photographs below - March 2016