Subtitled Animals on the Move, a handsome depiction of the annual migration of millions of animals through Tanzania's Serengeti National Park and adjacent reserves. The beautifully reproduced color photos -- closeups of the many species that participate in or prey upon the trek and panoramas of the terrain through which they pass -- are best here. Captions identify species and interpret the photos; a brief text adds some information, though it repeatedly emphasizes the ""dangers"" of the journey in the form of predators without addressing either the natural balance to which the prey-predator relationship is essential or the fact that some of these species are endangered. A note points out that the Maasai used also to occupy this territory. Glossary.