The Brown argus butterfly (Aricia agestis) usually has two broods each year, the first adults flying during May and June, the second brood appearing in late July and fading away in late September. Somehow, I missed the first brood this year so, for the last couple of weeks, I’ve been systematically checking the spots of every female Common blue (at a glance, they look quite similar to Brown argus – see my July 2018 blog Flying on the wings of confusion for tips on how to differentiate the two species). Finally, last Friday, this beautiful Brown argus flitted into my field of vision. I didn’t quite do a happy dance but there was a not-too-loud ‘Whoop’!