Labels:moths and butterflies | text | animal | invertebrate | pollinator | insect OCR: Swallowtail Butterfly The swallowtail butterfly is Britain's largest butterfly. It became extinct at Wicken in 1950 but was reintroduced in 1993. The Swallowtail butterfly depends on the milk parsley plant to provide food for its caterpillars. In late June, the adults emerge and fly for a few weeks, during which time they mate and lay eggs on milk parsley. The rest of the summer, the caterpillars eat and grow bigger, until they pupate in September, spending the winter as a chrysalis or pupa. Milk parsley is quite rare, and grows best in managed sedge beds. K >
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