Stanley Brock, the manager of the Dadanawa Ranch in Guyana, is equally at home in the saddle of his horse or the cockpit of his light plane. In his leisure hours he sometimes flies to enjoy the spectacle of one of the world's greatest and most remote waterfalls, the Kaieteur Falls; but most of his spare time is spent in studying the wealth of wildlife in the forest, swamps, and savannahs.