Endangered species of the British Isles in all BBC programmes
Lionel Kellaway encounters the loudest amphibian in Europe, the natterjack toad.
Trai Anfield encounters adders basking on the edges of Loch Lomond.
Coquet Island off the Northumberland coast is the last breeding site for roseate terns.
Lionel Kelleway is by a Cotswold river on the lookout for native crayfish.
Lionel Kelleway investigates the plight of our largest freshwater crustacean.
Lionel Kelleway looks for freshwater pearl mussels. Recorded in 2006.
Chris Sperring visits a meadow visited by 2,000 black-tailed godwits in winter. From 2013.
Lionel Kelleway tries to get close to the grass snake, Britain's largest native snake.
Chris Sperring travels to the Somerset Levels in search of great crested newts.
Lionel Kelleway visits a valley in Exmoor National Park in search of a rare butterfly.
Brett Westwood joins lolo Williams to explore hen harrier ecology. From 2001.
Jessica Holm searches for otters along the Tarka Trail in Devon. Recorded in 1993.
Lionel Kelleway travels to Hertfordshire to marvel at the antics of the Brown Hare.
Lindsey Chapman updates this Living World, from 2011, on brown hares in Hertfordshire.
Sarah Pitt goes in search of the endangered pearl-bordered fritillary.
Trai Anfield heads to RSPB Old Moor reserve to seek out the once-common tree sparrow.
Lionel Kelleway is joined by Rob Strachan in search of water voles.