Winterwatch in Wales

BBC Two Wales

7:00 PM to 7:30 PM

Tuesday 4 March

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Iolo Williams showcases animals that use intelligence to survive the challenges of winter. He begins on Anglesey, where he joins raven expert Nigel Brown to investigate these intelligent birds, using thermal imagery to uncover the secrets of their night-time activities. Plus, author and artist Emma Mitchell shares five tips to get the most out of a mood-boosting winter walk