Another photo from Donald sent to us with the following observations:
The other day, 09/09/2020 I was doing a spot of gardening in Bournemouth when I saw a great ball of white tumbling in the air. It took some time to count them but there were 6 “whites” flying touching and bumping each other. This is new behavior to me. One white would land or be distracted by the white Dahlias and then re-join the melee.
Eventually some gave up and landed, at least two were Small Whites and one was, I think, looking at the B.C. web site, a Green-veined White. I was surprised as I have never seen this species in the garden before and my first ever sighting of this species was this year on a walk along the Roman road near Gussage All Saints.