Steve Brown explores one of his favourite local haunts, Elmley Nature Reserve on the Isle of Sheppey, where swallows and swifts are gathering in their hordes, heralding the arrival of summer. Margherita Taylor is on the hunt for an invasive species of moth which threatens not just the oaks on Hampstead Heath in London but walkers too. On the farm, Adam’s horses are getting a hoof health check, and he catches up with top trainer Jonjo O’Neill to see how his racehorses are coping with life off the track. And wildlife film-maker Richard Taylor Jones hangs out with a busy vixen and her litter of playful cubs.