pale blue butterfly

pale blue butterfly

Observation - pale blue butterfly - UK and Ireland. Description: Little blue butterfly observed on a sunny spring day on a mature hedgerow. Have forgotten the name of the plant it is feeding on, the day was quite windy and I saw at least another one on the same walk. Please let me know what it is?

Little blue butterfly observed on a sunny spring day on a mature hedgerow. Have forgotten the name of the plant it is feeding on, the day was quite windy and I saw at least another one on the same walk. Please let me know what it is?