This butterfly was thought extinct in Kent in the late 1980's but there have been new records recently from the south of Bromley Borough. Look for them before noon in July and August when the males descend from a tall Ash or Oak tree to visit animal dung from which they obtain vital mineral nutrients. After noon they fly high in the tree canopy. The distinctive caterpillars grow to 40mm and after hibernation can be found until the end of June feeding on Goat Willow (or sometimes on Grey or Crack Willow).

See the full poster from the Bromley Biodiversity Partnership here... 

Judy John