Book excerpt: Life is tough and cheerless for Billy Casper, a disillusioned teenager growing up in a small Yorkshire mining town. Violence is commonplace and he is frequently cold and hungry. Yet he is determined to be a survivor and when he finds Kes, a kestrel hawk he discovers a passion in life. Billy identifies with her proud silence and she inspired in him the trust and love that nothing else can. Intense and raw and bitingly honest, A KETREL FOR A KNAVE was first published in 1968 and was also madeinto a highly acclaimed film, 'Kes', directed by Ken Loach.