Amazing Birds
April 2012
Eldon Greij
Eldon Greij is a biologist and a lifelong educator and the Founding Editor of Birder's World (now BirdWatching). His popular column "Amazing Birds" appears in every issue of the magazine.

Read more about Eldon Greij
Amazing Birds: How birds navigate
How birds navigateSubscriber Only Access

To return to ­previous years’ nesting sites and wintering areas, migrating birds rely on Earth’s magnetic field

By Eldon Greij
Published: February 24, 2012

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