According to this article the Swallowtail butterfly is starting to make a comeback in parts of Norfolk. The butterfly was once common across the Norfolk Broads but has declined in the last 100 years. It’s recent success has been put down to an increase in milk parsley which is a favourite food of the Swallowtail caterpillar. This is largely down to fen management and efforts to clear scrub which was invading the habitat. Since the programme began the butterflies have been seen in much greater numbers than ever before.
