Nature's Calendar - Series 1 - Summer: Rivers, Lakes and Lochs

Chris Packham's guide to the best places to see wildlife this summer. Chris visits the Fleet Lagoon in Dorset, home to a historic herd of swans. Sanjida O'Connell helps with the reintroduction of water voles on the River Dore in Herefordshire and Janet Sumner gets great views of one of the UKs most exciting birds of prey, the Osprey.