Well-organized and featuring catchy subheads ("Salmon Street: Born to Run"), this introduction to migration by land, sea, and sky introduces the phenomenon and details the process for nine different animals. For each, there is a habitat map, statistics about participants and distances, activities, food sources, complications, and working solutions. Bright photos on color-coded pages illustrate the text. Websites. Bib., glos., ind.

This informative and fun-to-read book explores the yearly migrations of more than a dozen North American animals of land, sea, and sky, including pronghorns; bison; polar bears; manatees; salmon; gray whales; cranes; herptiles (snakes, frogs, toads, salamanders, turtles); and monarch butterflies. Lively text describes the migratory routes for each animal (e.g., the "monarch flyway") accompanied by migratory maps and color photos from the National Wildlife Federation. "Fast-Lane Facts" list the start and end points of the animals' migrations, including how many miles and in which seasons they travel. O'Sullivan details how they stay fueled up for their journeys and how environmental issues ("Road Blocks") affect them. Examples of solutions devised by scientists ("Roadside Assistance") are included, such as "toad tunnels" built under bridges to help toads avoid being hit by vehicles during their migration. Kids will appreciate the suggestions on how they can help, too. Sections entitled "Catching up with . . ." offer lists of places where readers can experience the animals' migrations in person. An enjoyable resource for kids fascinated by the mysteries of animal migration.