In this edition of Nature on One, Terry Flanagan goes in search of one of Ireland's most secretive residents, the Common Frog, Rana temporaria. Out of the thousands of frog species found across the world, this is the only one native to Ireland. Terry steps into the wetlands, farmyards, and field edges where this elusive amphibian thrives, and meets the farmers and conservationists who work to protect its fragile world...