I don’t know what causes the difference but on some days the Buddleia in our garden can be teeming with butterflies and on other days it is just thousands of bees and hover flies. Here we have a few photos of a busy couple of days on the Buddleia.
When the sun is on it the Buddleia is teeming with Bees and sometimes Butterflies. This is the first time I have seen a White-Letter Hairstreak, thanks allthingsmothy for the ID confirmation. After the masses of Painted Ladies from a couple of years ago it was good to see a nice smart example again.