Common Blue Butterfly observed at RSPB coastal reserve on wildflower verge
No interactions present.
You are right to use the black border to identify this species, in fact there is no other blue in the UK that has such a fine black line between the blue wing and the white edging. Doesn't work for old worn specimens though!
Lat/Lng: 52.9, 0.0
OS grid ref: TF3539