This year I saw my first Brown argus butterfly (Aricia agestis) on 11 July and thought I’d seen my last on 26 August, a short but very sweet season of sightings. Then, to my astonishment and absolute delight, I discovered two more on the same day, 16 September, one at Lavernock Nature Reserve and the other at Cosmeston Lakes Country Park.
These had to be the product of the first brood of butterflies breeding and so were a second brood, not something I’d seen before with this butterfly. As the local populations of Dingy skippers have also produced a second brood and the Small coppers a third brood this year and nothing has changed in their environments, I can only assume this has been caused by the warmer climate.
I haven’t managed to find the Lavernock Brown argus again but the Cosmeston butterfly was still in the same spot last week. A late summer-early Autumn treat!