Zoo--The Modern Ark

Page ( Lords of the Air ) here examines the modern zoo and its role in saving animals from extinction, breeding and returning them to the wild. Among the successes are Pere David's deer, the Przewalski horse, Arabian oryx, golden lion tamarin. Page gives a brief history of zoos, noting improvements in habitat, nutrition, education programs. He discusses progress in breeding through embryo transplants and in vitro fertilization; education is focused on conservation. Entertainment has value for the animal as well as the visitor--animal acts offer stimulation to the performer. Page profiles 10 great zoos of the world, and lists some 50 ``major'' zoos. Interspersed with the text, organized by region, are 100 magnificent color photographs of wild animals. A fine book. Grolier, Rodale and Macmillan book clubs selections. (June)