Photos

Kirtland's Warbler

March 2, 2017
Bird perched on hand

Smithsonian Institution

The silver antenna of a miniature archival geolocators peeks out from between the bird’s wings. These tracking devices, that weigh half a gram, recorded several types of data, including the duration of each migration―on average, the birds travelled 1,700 miles in only 16 days.

Photo courtesy Smithsonian Institution

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