Key features: - Series content is part of the third grade science curriculum - Text reviewed by both a reading consultant and a science curriculum consultant - Highlights spectacular and record-breaking migrations and covers the purposes of migration - Highlights spectacular and record-breaking migrations and covers the purposes of migration - Explains the how of animal migration--celestial navigation, navigation by scent, by magnetic field, by opportunism, and more - Includes infographics and maps that show routes, migration life cycles, comparative distances, and how types of navigation work Special Features: - Maps - Glossary - Index - Sources of further information