National Geographic News, Reporting Your World Daily

Thursday, October 28, 2010

Photo: Migratory Songbird Mystery Solved


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Scientists used super-small geolocation devices to track purple martins along their entire migration route to the tropics and back. One dashed back north at about 358 miles (577 kilometers) a day, more than three times faster than previously known.

Large photograph courtesy Timothy J. Morton; inset photograph courtesy Bridget J. Stutchbury