Chris Packham and Michaela Strachan broadcast live from the Scottish Highlands, reporting on the overnight wildlife action. Martin Hughes-Games scales the snowy Cairngorms to track down the mountain hare and understand how this mammal has adapted to the near Arctic conditions.

Meanwhile, the team reveal the secrets behind an enormous roost of rooks, one of the UK's biggest winter spectacles. And Gordon Buchanan braves our coastal waters to investigate marine creatures in winter.

Live from their base in the Scottish Highlands, Chris Packham, Michaela Strachan and Martin Hughes-Games, reveal the winter survival strategies of the UK's wildlife, including those making the most of our gardens.

In Norfolk, the Seal Diary continues with dramatic battles between rival males and new challenges for a young pup. And the team reveals how the River Dart is a lifeline to wildlife living in the bleak yet beautiful winter landscape of Dartmoor.

Chris Packham, Michaela Strachan and Martin Hughes-Games report live on wildlife stories from the Scottish Highlands, revealing how the UK's wildlife is surviving this challenging season.

The team find out why cities become a haven for wildlife in winter, and the Seal Diary reaches its climax, as pups start to leave the beach for life in the open ocean. But for some animals, like the fox, a hint of spring is already in the air and the mating season is under way.