Faster Than a Speeding Songbird

You won’t find geolocator backpacks in the North Face catalog anytime soon, but if you fly south for the winter you may notice one strapped to the back of a migrating songbird. That’s how an inventive group of researchers have been tracking the speed and location of purple martins and wood thrushes flying from Pennsylvania to South America and back. What they’ve have found is truly astonishing. read more

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