Sounds of the Earth - Rooks, Bats and Toads

Relax with a calming mix of music and natural sounds, from rooks on Orkney to a midwife toad chirruping in south-west France. Plus bats in Lancashire and nightingales in Sussex. Recordings by BBC Radio 3 Sunday Breakfast listeners Stephanie Fritchley, Aidan Semmens, Simon Tuck and Paul Richens.