4/8 Hedgehogs are in decline. Paul Evans separates the science from the sentimentality.
BBC Radio 4
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.
BBC Radio 4 FM