Overview

• Citizen scientists have recorded 5,300 Jersey Tiger moths so far in 2025, compared with 3,496 during last summer’s count.
• Sightings have emerged beyond their usual coastal and Channel Islands range, with records in Cardiff, Birmingham, Cambridgeshire and Essex.
• Butterfly Conservation attributes the surge to this summer’s warmest-ever spring and relatively dry conditions fostering moth activity.
• Long-term monitoring shows that population highs have contracted over the past five decades while troughs during poor years have grown deeper.
• The Big Butterfly Count continues through August 10, enlisting volunteers via a free app or website to inform national conservation strategies.