Best of Natural History Radio

Research biologist Lucy Hawkes from Bangor University is in the studio reporting on her latest work on the Bar-Headed Goose. We find out how studying their migration helps inform their conservation. Chris Sperring reports on the re-introduction of the Fen Raft Spider into a restored marshland in Suffolk. And the BTO are live on the programme to bring us up to date with the Cuckoos on the move.

20/30 The Pika is a small mammal that lives in the high altitude grasslands in mountain ranges from Japan, through central Asia and North America. Andrew Smith and his team of field biologists from Arizona State University has studied the Pika for many years on the Tibetan Plateau. It's in Tibet, he claims, they are wrongly blamed for the degrading of the grasslands by the Chinese. We have been to see Andrew Smith and have a reply from the Chinese Academy of Science. Also in the programme: Kelvin Boot reports the status of polar plankton from a meeting (about plankton) in Plymouth. And the Curlew - the piping call of which contributes to the soundscape of uplands in summer and estuaries in winter, are seriously in decline in Ireland, SW Scotland and Wales. By how much and why we will find out. Presented by Brett Westwood Produced by Mary Colwell Editor Julian Hector

19/30 We have our third report from the tundra of the Alaskan North Slope. Species has been reporting the work of U.S. Geological Survey biologist Matt Sexson on Spectacled Eiders. Zoo vets Maria Spriggs and Gwen Myers of Mesker Park Zoo Indiana and Columbus Zoo Ohio respectively, provide the clinical support in the field. So what is conservation medicine and is there an increasing role for vets in the wider world of saving wildlife in our increasingly stressed planet? Also in the programme: the British Trust for Ornithology highlight garden bird disease getting into Europe. Kelvin Boot is live from Aberdeen at an international conference on marine biodiversity. And we acknowledge the death this week of Professor Wangari Maathai, a Kenyan woman who won the Nobel Peace Prize in 2004 for her work teaching women to plant trees. Wangari Maathai believed the destruction of the natural world was directly linked to sustained poverty in Kenya.

18/30 Saving Species goes to Alaska to find the Spectacled Eider, a duck which is the focus of intense research and a species that represents the future of many Arctic species. Presented by Brett Westwood Produced by Sheena Duncan Editor Julian Hector

17/30 Butterfly expert Matthew Oates is tramping the wilds with Brett looking for the Purple Hairstreak Butterfly. And Julian Hector reports from the North Slope of Alaska where he meets the team working on the extraordinary Spectacled Eider. We also hear from Sarah Pitt who has been looking for Water Voles - so this weeks edition of Saving Species is truly outdoors. Presented by Brett Westwood Produced by Sheena Duncan

Presenter Brett Westwood introduces the the Horrid Ground Weaver - a miniscule hairy creature found, it is thought, in only one place in the UK - And a team of biologists are on the hunt. Also in the programme: The latest news on Indian Vulture conservation - and the release of the European Cranes on the Somerset Levels. With news from Kelvin Boot.

Brett Westwood presents. The Wailing Wall in Jerusalem is the oldest known nesting site in the world for the common swift but numbers are falling there and elsewhere - why and what is being done to help? And Brett discovers more about the private life of the beautiful woodland butterfly the Silver Washed Fritillary. Brett also gets an update on Chris, the Saving Species cuckoo that is making its way to its wintering area in Africa. With news from Kelvin Boot.

The Malham Sedge has not been seen for four years. Paul Evans joins a research project run by Ian Wallace on Malham Tarn in Yorkshire to find out if this rare caddisfly still exists.

The Weardale uplands are home to rich and varied plant communities. For this weeks' Living World, Paul Evans joins Dr Phil Gates on a botanical exploration with a difference: A wildflower rich landscape with a sinister botanical twist in its tail.

The Yorkshire Dales has some of the most spectacular scenery in England. In this weeks' Living World, Michael Scott explores the plants of the limestone pavement with Tim Thom. Produced by Andrew Dawes

Its summertime and for this weeks Living World Paul Evans crosses over to the Farne Islands off the Northumberland coast where he joins warden David Steele on a puffin safari. Produced by Andrew Dawes

14/30 Chris the cuckoo is south bound, heading for Africa - but where exactly is he? We visit the British Trust for Ornithology's HQ in East Anglia and find out latest progress of him and his compatriots. We also have a report about the UK Lady Bird Survey being conducted by the Biological Records Centre. Over recent years we have heard much about the invasive harlequin ladybird pushing out our native species - but is this really the case. And how easy is it to see all the ladybrid species found in the British Isles? We'll be encouraging you to join in and if you don't know your ladybirds, why not use ispot.

Brett Westwood presents. Ponds in the UK are the target for significant conservation measures, but how well have we done looking after the wildlife of these mini wetlands? We talk to Natural England on the future of Biodiversity Action Plans (BAPs). Also in the programme we feature the latest report from Bob Swann surveying the seabird colonies of Tain and Canna. And a report from Newcastle from Trai Anfield on the future of urban nesting Kittiwakes who are being re-located to breeding towers on the River Tyne. With news from Kelvin Boot.

Brett Westwood presents. Saving Species has an interview with Sperm Whale biologist Hal Whitehead and reports live from the International Whale Commission. We also have a report on wetlands in England and an interview from Kenya on the status of Giraffes. Giraffe numbers have been falling in Africa - why?

11/30 The Green Turtle is one of nature's great travellers, migrating from feeding grounds to breeding grounds traversing the oceans of the world. Like so many species reported in the series, Green Turtles are in decline. Our reporter James Brickell reports from the Great Barrier Reef with biologists who are both trying to understand the natural history of these magnificent creatures and help in their conservation. And we have turtle biologist Brendan Godley from Exeter University live in the studio. We'll have an update from the two Beavers we're following in Devon - Chris Sperring has been down to visit the site and to see the Beavers. And how is Chris the Cuckoo doing? We'll be spying in on his migration south. Presenter: Brett Westwood Producer: Sheena Duncan Editor: Julian Hector