(c) Chris Davis - Amphibian and Reptile Conservation (www.arc-trust.org)

European Tree Frog (<i>Hyla arborea</i>). Male calling
   
European Tree Frog (Hyla arborea). Male calling
   
European Tree Frogs probably have the loudest call proportionate to their size of any UK native or introduced species. There were two long established colonies in tne UK, but the status of both is now dubious due, apparently, to collecting.