Val d'Aran, July 2005
Two (rather different) males, Val d'Aran, July 2005
Spain, July 2003
Switzerland
The chalkhill blue is a common butterfly of chalk grassland, from lowlands right up to high in the mountains, occurring across southern England in downland areas. It generally flies in July but may be seen in June in good years. The male is unmistakeable with his silvery blue and broad borders extending thinly across the apical half of the forewing. The female is, like most blues, brown with orange lunules, but can be recognised as