Can You Spot A Swallowtail?
8:34am 14th June 2014
(Updated 9:46am 16th June 2014)
People in Dorset are being encouraged to keep a look out for a rare species of butterfly set to colonise the UK.
The Continental Swallowtail has already been spotted in Sussex, but experts are on the lookout for the creatures across the South of the country.
Last year's warm weather saw an increase in the butterflies, with the largest number seen since 1945.
Michael Blencowe is part of Butterfly Conservation, a charity which aims to conserve rare species. He said: "There has never been a more exciting time to head out looking for butterflies.
"This current invasion could be the start of the colonisation of Southern England by the Swallowtail. In 20 years this butterfly could be a regular visitor to our gardens."
The rare Swallowtail is similar to tropical species, with dramatic yellow and black markings and distinctive streamer-shaped tail.