My quest to find a positive view of Brimstone Gonepteryx rhamni on Lancing Ring LNR was successful today. Taking a walk on the west side where ribbons and clumps of Hawthorn, Elder and Bramble break up the Brachypodium smothered grass slope. The western-most perimeter adjoins an arable field, here fluttering over the Bramble a bright yellow male Brimstone butterfly patrolled back and forth over about 200 yards of it's territory. It's was not in the mood for resting so a photo was out of the question.
My first view of the Brimstone was a couple of weeks ago but so brief as to be hard to be confident that it was not a leaf in an updraft of wind.
A Peacock was less elusive. At least one, probably more settled on the short grass path during my quest.