All ISO 3200, between 1/30 - 1/50s. My patience was eventually rewarded with some cracking views but by then the light had gone. I was initially very frustrated when the bird perched closer than the closest focus distance of the 800mm, but the extension tube came to the rescue and I got another chance. A lovely bird.
Canon 1DMkIII 800mm f5.6 + 25mm extension tube.