Chris Packham, Michaela Strachan and Martin Hughes-Games present the nature programme from the National Arboretum at Westonbirt in Gloucestershire, studying wildlife through the season and tracking the changes as winter approaches. In the first edition, they examine wild boars and bats in the Wye Valley, while naturalist Roy Dennis follows the migration of osprey chicks as they head for Africa. (Followed by BBC Weather Update). As ever, there's Autumnwatch Unsprung at 10.00pm, which sees the presenters chair a discussion of the themes and issues raised in the main Autumnwatch programme. Members of the audience take the opportunity to quiz the presenters and learn a few of the behind-the-scenes secrets of how wildlife is caught on camera.