Author and conservationist Isabella Tree began inviting friends over to hear nightingales at Knepp, her home and rewilding project in West Sussex, 15 years ago. Nightingales used to be associated with coppiced woodland, but at Knepp they’re thriving in dense, thorny scrub which provides protection for their nests, which they build a foot or so above the ground. Though nightingales are still one of the UK's rarest birds, today Knepp has around 60 singing males a year – around 1% of the UK population.

Produced by Sophie Anton for BBC Audio in Bristol.

This programme features audio recorded by Hazel Reeves at Knepp.