Iolo Williams visits Dare Valley Country Park near Aberdare, where dippers, herons, cormorants and kingfishers frequent the Dare River. Show more

Iolo Williams visits Padarn Country Park in Snowdonia, encountering ring ouzel, wood warblers, slow worms and otters. Show more

Iolo Williams explores Great Orme in Llandudno, a park full of history and ancient mines. Iolo finds the Orme's rare moths and butterflies. Show more

Iolo Williams explores four historic estates in Wales. He visits Bute Park in Cardiff, where he encounters a green woodpecker, jays, dippers, salmon and otters. Show more

Iolo Williams explores four historic estates in Wales. He visits ancient Dinefwr Park and tracks down lesser spotted woodpeckers, badgers and brown long-eared bats. Show more

Iolo Williams explores four historic estates in Wales. At Snowdonia National Park, he encounters a rarely seen mammal and views some woodland wildlife. Show more

Iolo Williams explores the dramatic Stackpole Estate in Pembrokeshire, where he encounters pike, otters and a colony of greater horseshoe bats. Show more

Iolo Williams explores four estates. In Singleton Park, Swansea, he carries out an experiment on a pair of long-tailed tits and learns about the resident insects. Show more

Iolo Williams explores wildlife havens. He visits Wepre Park, where he tracks down badgers and joins wardens surveying for rare great crested newts. Show more

Iolo Williams explores wildlife havens. He learns how Holyhead Breakwater Country Park transformed from an industrial site into an urban park. Show more

Iolo Williams explores wildlife havens. In Pontypool, he visits a park that is home to thousands of nesting bees and the rare native crayfish. Show more

Documentary series. Iolo Williams explores Margam Country Park on the outskirts of Port Talbot, which features parkland, lakes and mature woodland. Show more