The forecast was for rain in the afternoon so I headed back to the car, keeping my eyes peeled and I saw a female dragonfly hunting along the path. Eventually she stopped for a couple of seconds, just long enough for this photo. She is a southern hawker (Aeshna cyanea), so of no interest to the male common hawker I had already seen.
I got back to the car moments before the heavens opened. I'll return soon to see if I can come up with a matching pair of dragonflies.