Fifteen animals are fitted with radio collars to allow them to be tracked, conservationists say.

Work to release 15 pine martens into woods across Dartmoor has been completed, the Devon Wildlife Trust (DWT) says.

The mammals, which are related to weasels and otters, were brought down from Scotland.

They were kept in soft-release pens for three days to get them used to their surroundings before being allowed to run wild, staff said.