Iolo Williams explores the valleys north of Swansea. He finds dippers and kingfishers nesting on once-polluted rivers, and Wales’s rarest nesting bird, the honey buzzard. Show more

Iolo Williams explores the valleys inland from Port Talbot in south Wales. He finds adders on a rugby pitch, hears the haunting sounds of a nightjar and watches a barn owl hunting.
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Iolo Williams heads up the Taff, Cynon and Rhondda to find sand martins at an old ironworks, a stunning wetland and insects thriving on a coal tip.
He also makes friends with a fox.
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Iolo Williams goes up the valleys from Newport and gets a rare view of a long-eared owl. Another treat is a marble white butterfly, plus peregrines and lapwings on coal tips. Show more