Benyus, Janine M.The Secret Language and Remarkable Behavior of Animals. Black Dog & Leventhal, 1998. Accessible, clearly written meditation by zookeeper Benyus on the behavior and communication traits of species she has observed firsthand.
Dugatkin, Lee.Cheating Monkeys and Citizen Bees. Simon & Schuster, Harvard University Press, 1999. 2000. An evolutionary biologist on cooperation among animals.
Gould, James L., and Carol Grant Gould.The Animal Mind. Freeman, 1994, 1999. How animals respond to their environment.
Croze, Harvey, and Carlo Mari.The Serengeti's Great Migration. Abbeville, 2000. One of the world's most dramatic migrations, caught in 160 photographs.
Dingle, Hugh.Migration: The Biology of Life on the Move. Oxford University Press, 1996. Technical text on animal migration. It is divided into four parts: methods for study, physical and biological factors, life histories, and applications and implications. For advanced readers.
Pope, Joyce.Animal Journeys. Troll, 1993. A discussion how and why animals migrate, the preparations they make for their journeys, and how they find their ways. For younger readers.