Watch Countryfile Season 33 Episode 17 Online

Helen Skelton is in the Nidderdale Area of Outstanding Natural Beauty in North Yorkshire, helping prepare for the return of both animals and visitors to the hills. She joins a team keeping track of adders emerging from hibernation, to find out why numbers are falling. She also joins in with efforts to help save essential woodland and its wildlife, and discovers hidden wonders as she heads into the depths of How Stean Gorge. On his Cotswold farm, Adam Henson is struggling with the unpredictable spring weather. Tom Heap investigates how a rise in pet ownership is fuelling dog thefts and wildlife film-maker Jack Perks celebrates one of our most colourful but overlooked freshwater fish – the grayling.