Colonies expand for the treetop emperor

Dedicated searches have revealed a rare butterfly back in its former Kent stronghold and gaining other territoriesBritain's most charismatic and elusive butterfly, the purple emperor, has a habit of turning up unannounced. This powerful, treetop, butterfly lives at low densities in the landscape but has been spotted in many new places thanks to the combination of a fine mid-summer and some astonishingly thorough searches by devotees. Related: Interesting times for lepidopterists Continue reading...