The UK's largest butterfly, the swallowtail is striking and exotic-looking. Adults fly between May and July when they can often be seen over reedbeds, or feeding on ragged-robin or flowering thistles. Swallowtails are restricted to reedbeds and marshlands in the Norfolk Broads; very rarely, migrants from the Continent appear on downland in southern England. The foodplant of the caterpillars of our native race is Milk-parsley, whereas migrants may feed on wild carrot.
How to identify
The wwallowtail is a large and unmistakeable butterfly. It has creamy-yellow wings with heavy black veins and blue margins. The hindwings have distinctively long 'tails' and a red spot.
Did you know?
The UK population of the swallowtail is a unique subspecies, Papilio machaon britannicus, found only here.
How people can help
The Norfolk Broads is an inland waterway and a very special area of fen, marshland and reedbed. Along with the Suffolk Broads, it is the UK's largest protected area of wetland and has National Park status. Many organisations and individuals work together within the Park to conserve and enhance its rare habitats for the benefit of both wildlife and people. Norfolk Wildlife Trust is one of these partners and has a number of nature reserves in the area which it protects for local wildlife like the wwallowtail. Become a member and support the work of your local Wildlife Trust.
