It is set in Barnsley, South Yorkshire and tells of Billy Casper, a young working class boy troubled at home and at school, who only finds solace when he finds and trains a kestrel whom he names "Kes".
A new build on the site of the former Boughton cold store is named The Windhover after an old name for the Kestrel.
In countryside locations the waymarks consist mostly of a simple white disc mounted on a wooden post, with a directional arrow and flying kestrel logo in blue and text in green.
When quartering open country it frequently hovers like a Kestrel.
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