The Essex Serpent author Sarah Perry takes Martha Kearney to see the great rook and jackdaw roost at Buckenham Carrs in Norfolk. At dusk thousands of birds descend to settle in the trees for the night, a sight that Sarah finds both magical and comforting. She explains the role that nature plays in her novels, as active as any other character.

Sarah Perry is the author of After Me Comes the Flood, The Essex Serpent, Melmoth, Enlightenment and Death of an Ordinary Man.

Producer: Beth O'Dea