On the brink - why our dormice are disappearing

They've been around for 40 million years, but now they're facing extinction.

The number of Hazel Dormice has plummeted by a third since the year 2000.

The South East is one of their last refuges, and work is going on to try to save the dormice before it's too late.

Malcolm Shaw joined a survey at Broadwater Warren, an RSPB reserve near Tunbridge Wells.