Iolo Williams returns with his wildlife safari around Wales. He's in the Brecon Beacons to celebrate 50 years since it became a national park.

Iolo is at the Rhydymwyn Valley nature reserve near Mold. Formerly a wartime munitions factory, the site has been transformed into a wildlife sanctuary. Show more

Iolo Williams is on a wildlife safari around Wales. On this stage he drops in on the beautiful Bardsey Island and the Llyn Peninsula. Show more

Iolo Williams is on a wildlife safari around Wales. Show more

Iolo looks at the natural world of Swansea and the Gower. He finds out about native lizards, explores rockpools and seeks out the city's hidden wildlife. Show more

As the safari reaches the Coed y Brenin forest outside Dolgellau, Iolo spends the night in a hide watching for nocturnal wildlife, and tries an odd form of fishing. Show more

Iolo Williams continues his wildlife safari around Wales. This time he visits New Quay and goes in search of bottlenose dolphins in Cardigan Bay. Show more

Iolo Williams explores the wildlife of the Rhydymwyn Valley nature reserve in Flintshire, which used to be a wartime munitions and mustard gas factory.

Naturalist Iolo Williams travels to Bardsey Island to get a closer look at sea birds, seals and other animals that inhabit the island.

Iolo Williams visits the National Wetlands Centre Wales, near Llanelli and looks at the waterfowl and water voles now found here.

Iolo Williams visits the Cors Caron Nature Reserve near Tregaron, an ancient peat bog in the heart of Ceredigion, looking for pine marten. Show more