Harriers are a charismatic group of birds of prey with a worldwide distribution that have long fascinated bird watchers and scientists. Here for the first time

Plates 1-3 illustrate representatives, in flight, of all 78 genera, grouped by size and zoogeographical regions.".

An acknowledged classic of narrative nature-writing, Donald Watson's The Hen Harrier was the culmination of a lifetime's study of this beautiful upland bird. A