BEES DANCE AND WHALES SING

More intriguing animal facts from Facklam (And Then There Was One: The Mysteries of Extinction, 1990), who here explains how scientists investigate animal communication, including body language, sounds, and chemical signals: in one case, a robot bee is programmed to waggle-dance, flap its wings, and secrete drops of sweetened water so that researchers can determine essential elements in bee communication. Sound communication ranges from ultrasonic (a bat finding her own baby among thousands) to infrasonic (elephants communicating across miles). Soft b&w drawings, attractive format, and clearly presented, up-to-date information make this unusually appealing. Index. (Nonfiction. 8- 11)