I visited the Iron Age Fort at Warham Camp today to try and see my first Chalkhill Blue Butterfly.
After a good walk around the site, it didn't take long before I saw my first one.

I only saw three individual Chalk Hill blues on site, probably due to being a few weeks early. In Norfolk, this is the sole colony of Chalkhill Blue butterflies. They were ‘introduced’ here some years ago, much to the displeasure of the ‘authorities’. However, they are doing well and have had no adverse impact on other species; it's 65 miles to their nearest kin at Devil’s Dyke near Newmarket.
Anyway, I was happy seeing this species of butterfly, and it was a beautiful sight for an evening walk.