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Archive Home > 2009 > February > 11 > A winged migration, heading north

A winged migration, heading north

New study points to link between warming, birds’ winter journeys

By Dina Cappiello / The Bulletin
February 11, 2009

WASHINGTON — When it comes to global warming, the canary in the coal mine isn’t a canary at all. It’s a purple finch.

As the temperature across the U.S. has gotten warmer, the purple finch has been spending its winters more than 400 miles farther north than it used....

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