Bird interest consisted of little more than singles of Little Ringed Plover and Reed Warbler at the Bill and 5 Sanderling at Ferrybridge.
Orange-tailed Clearwing - Inmosthay Quarry, 16th July 2016 © Martin Cade
With the larval foodplant - Wayfaring Tree - so common in places we'd always thought it odd that this species was unrecorded from Portland, but repeated searches had drawn a blank so it seemed like the species really was absent. Thanks to Robert Payne and his pheromone lures there is now this fully confirmed record and it'll be interesting to see if some other off the beaten track spots like Inmosthay also harbour populations.