Technology reveals the truth about the migration of birds such as snow guns.
Steve Byland/istockphoto/Getty Images
flight path
Rebecca Heisman (Harper Collins)
Questions about how and why so many birds make such a difficult annual migration and where they go have puzzled us for years.17th century British educator Charles Morton speculates that perhaps they are flying to the moon. Others suspected that when the bird disappeared, it was crouching at the bottom of the pond for the winter.
More than three centuries later, scientists are still trying to fully unlock its secrets…
