Beguiled by blues – A guide to 'Blue' butterflies
… be a holly blue. At a glance, it could be mistaken for a common blue, but seeing the underside of the wings will allow for easy separation. The holly blue has a pale, silvery underside with fine black spots, and lacks any … argus. They’re found predominantly on heathland and coastal sites, where eggs are laid on heathers and gorse. They can …