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This episode looks at the extraordinary lengths animals go to in order to survive this harshest of seasons. Chris Packham comes live from the New Forest, looking for Dartford warblers, and he updates us on what’s happened on the live cameras over the weekend.

Iolo Williams is looking at the water shrews and discovers their amazing ability to survive the winter, while Gillian Burke explains why our local sewage works can be a magnet for wildlife during the winter months.

Tonight also sees the start of Megan McCubbin 's four part look at species that we don’t love as much as we should. Megan hopes to challenge the reputations of these animals and make us appreciate them, starting with rats.

We’re also on the Somerset levels as 'Birdgirl' Mya Rose Craig goes in search of the very rare Penduline tit – and she hopes to show Iolo where to find them.