The Mystery of MigrationMigration: The GenesisA Winning Strategy for SurvivalNot All Migration Is the SameComplete Migrators—Birds You Can Count OnShort-Distance MigratorsUnpredictable MigratorsBirds That Stay PutNomadic SpontaneityFueling for the TripExternal and Internal CuesMigratory RestlessnessHormonal ResponseFlight by Day or by NightPerks of Flying at NightMaking Sense of NavigationLearned MigrationNavigation MapsMagnetic Compass SensitivityMore Than One Sense, One SkillCircadian Clock ScheduleUsing the Stars en RouteMigratory FlywaysWinds and DriftFlocks vs. Solo FlightElevation ChallengesFlight SpeedsEnergy in FormationsDestinations, Start to FinishRest Stops and StopoversRerouting for WeatherReverse MigrationOut of Normal RangeWintering GroundsIt’s Not EasyA Rhythm for LifeAbout the Author