When Brett Westwood began a wildlife diary at the age of 15, little did he think that he'd still be writing notes, nearly 40 years later about the same local patch in North Worcestershire.

The River Stour has its source in the industrial Black Country and flows through Brett's local patch on its way to the Severn, about 9 miles away. Today, although it is polluted, the river is far clearer than in years gone by, thanks to rigorous controls on pollutants. With their absence, fish have returned and damselflies such as the white-legged damsel which is sensitive to pollution, skim across the surface.