As its name suggests the Common Heath is a common moth on moorland where its larvae feed on a variety of heather species. It is on the wing from May through to June, with a small second generation in August. It is active by day and can be seen flying over heather like a small butterfly. The large feathery antennae of the male, as in this picture, distinguishes it from any butterfly. It over winters as a pupa in a cocoon on or just below ground.