Iolo: A Wild Life BBC1, 7.30pm

Ornithologist and nature observer Iolo Williams delves into the archives from the past 25 years of filming in Wales. He discovers delightful barn owl chicks in a Trawsfynydd barn, great crested newts in a housing estate pond in Johnstown, Wrexham, and dormice in a Gwent woodland. He also comes across a stoat on the Great Orme in Llandudno and Arctic Alpine plants and relic fish from the Ice Age in Snowdonia.