4/8 Hedgehogs are in decline. Paul Evans separates the science from the sentimentality.
3/8 Brett Westwood discovers how the fortunes of Britain's lampreys could be improving.
2/8 Brett Westwood finds out why conservationists are dropping logs in rivers and streams.
1/8 Brett Westwood finds out why woodpecker numbers in the UK are both up and down.
8/8 James Aldred visits the Grove of Titans and climbs the world's tallest tree.
7/8 James Aldred travels to California in search of the world's biggest trees.
6/8 Wildlife sound recordist Chris Watson explains how landscape paintings have inspired him.
5/8 Wildlife sound recordist Chris Watson travels to India to record the roar of a tiger.
4/8 The remarkable story of Emma Turner; a pioneer of bird photography.
3/8 The sounds of a Ghost Roost; a performance by starlings.