http://www.bbc.co.uk/news/uk-england-norfolk-22953000
Echo-soundings recorded during Norfolk's "biggest ever bat survey" have indicated the discovery of a new species in the county, said experts.
Early analysis has revealed signs of the Alcathoe bat.
Researchers from the Norfolk Bat Survey have said they now need to catch the species in order to visually confirm its existence in the county.
First identified in Greece in 2001, it has only previously been recorded in the UK in Yorkshire and Sussex.