Autumnwatch returns for a celebration of UK wildlife.

In the last live programme of the series, Chris Packham and Kate Humble say goodbye to autumn and hello to winter. For wildlife the preparations are over - some have fled to warmer climes, others have arrived from colder ones and some have gone into hibernation.

In Northern Ireland, Darryl Grimason unravels the life of a favourite winter visitor - the whooper swan. By late November, more than 6000 have fled Iceland to spend the winter on our shores. Meanwhile, Martin Hughes-Games has top tips on what wildlife to look out for over the winter months.