Paul Evans visits Dorset to find out why heathland birds don't welcome hordes of visitors. Some wildlife organisations advocate the importance of 're-connecting' with the natural world, which means encouraging people onto nature reserves and other places rich in wildlife to experience it first hand. But whether people go as naturalists, horse-riders, dog-walkers or mountain-bikers, they all have an impact on the places they visit. Paul tramps the heaths to find out why nightjars and woodlarks are averse to hordes of visitors.