Despite its size, this pretty little butterfly more than makes up for it in colour. The males have unmissable milky blue wings that have a deep dark brown border, fringed with white. The females are much duller and spend less time flying.
Horseshoe vetch
From August to October the butterfly can be seen laying its eggs on the stems of the horseshoe vetch. The eggs eventually fall to ground where they spend the winter, hatching only when the ground warms in spring.