Country Focus - Sunday 11th March at 0700; presented by Rachael Garside and repeated Monday 12th March at 0530

We're at Kenfig National Nature Reserve where after years of becoming over-stabilized and overgrown by vegetation, with some rare plants and insects driven to the brink of extinction, work has started to rejuvenate Wales' sand dunes. It's part of a pilot project to study 10 major sand dune sites around the Welsh
coast, to identify other areas that need rejuvenating.

Dry stone walls and hedges are an attractive and ancient feature of the Welsh countryside. Now, after a successful grant scheme in Denbighshire, rural regeneration agency Cadwyn Clwyd, hopes landowners in Flintshire will also apply for help to rebuild and maintain them; keeping rural skills alive and improving habitats for wildlife in the process.

Seven million gallons of salt water is being pumped into a nature reserve in North Wales in an attempt to kill off an invading Australian weed. The plant, called Crassula Helmsii has invaded the lagoons of the RSPB Conwy reserve, where it smothers the mud flats that birds need to feed on. Managers at the reserve say there's only one way to get rid of it ...and it's a salty solution!

and staying with our feathered friends - Sand Martins have just started to arrive back in Wales ready for the breeding season. In recent years some birds have attempted to breed on Anglesey in dangerous positions, so as Huw Jenkins discovers a special wall for them is being built to help out.