Robert Macfarlane on 'Landmarks', shortlisted for the Samuel Johnson prize

'Smeuse': Sussex dialect for 'the hole in the base of a hedgerow made by the repeated passage of a small animal'
'Af'rug': a Shetland word for 'the reflex of a wave after it has struck the shore'
Zwer: the sound made by a covey of partridges taking flight.

A tiny sample of the words collected by the nature writer Robert Macfarlane for his book Landmarks which has been shortlisted for the Samuel Johnson Prize for non-fiction. He's been speaking to Martha Kearney about his work.