Paul Farley meets the poet Jen Hadfield at home and out and about in Shetland taking some of her new poems from her book Byssus back to where they were written, their source. Byssus is the name given to a mussel's beard, it is what anchors the shellfish to its rock. Many poems in the book explore both molluscs and bivalves but also what a home might mean to other creatures including poets. Half the poems need wellington boots, the others a good raincoat, but the Spring is here too and life grows afresh. Producer: Tim Dee.