According to experts, Britain has been invaded by an army of exotic migrant moths under the cover of darkness. Well, the news has encouraged north by the gentle southerly breezes and balmy evenings of an Indian summer.

The rosy underwing, the crimson speckled and the sinister death's head hawkmoth are among the rare migrant insects in autumn. The Clifden nonpareil is another rare migrant moth. Well, experts have to say that this species is establishing itself as the country's newest resident breeding species.

Les Hill is a moth recorder for Dorset who witnessed three Clifden nonpareil moths in the past two weeks in south Dorset. He added, "As the name nonpareil states, it is peerless and has no equal. To record one in a lifetime is the fulfilment of an ambition; to record them every year in my garden is just remarkable".

Hill said that Clifden Nonpareil is considered to be one of the most chromatic of British fauna. Moreover, it is on every moth recorders' `wish list'.

Richard Fox of Butterfly Conservation said that this annual autumnal migration emerges as very exciting thing for naturalists, said Richard Fox of Butterfly Conservation. According to him, 2013 is the year which is highly likely to be phenomenal for certain species.