Peak song birds captured on MP3

Scientists are using technology to capture the songs of wild birds in the Peak District.

Lightweight MP3 players will be taken to upland areas, including Eastern Moors and Dove Stone in the Peak District.

The song of the ring ouzel, otherwise known as the mountain blackbird, has been fading away from some areas and scientists want to find out why the bird is disappearing from so many of its former haunts.

The purpose of the exercise is to establish where the birds are breeding during the second UK-wide ring ouzel survey, this year.