内容简介：
Key features: - Authentic language- Text reviewed by both a reading consultant and a science curriculum consultant- Highlights spectacular and record-breaking migrations and 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 workSpecial Features: - Maps- Glossary- Index- Sources of further information