Sunday, 21 May 2017
Green hairstreak butterfly
It is green hairstreak time again. I first saw these butterflies last year and went back this week for another look. They are small and brown but diffraction of light by the scales on the underwing produces this wonderful iridescent green colour. They look brown when they fly but the upper wings are always hidden at rest. The males hold a territory and defend it vigorously against intruders, often returning to the same vantage point between sorties.