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Study: Birds wintering farther north could signal climate change http://apocadocs.com/s.pl?1234880336
A recently released report by the National Audubon Society has tied changes in migratory bird habits to global warming. According to data from the group's annual Christmas bird count gathered over the past 40 years, nearly 60 percent of the 305 bird species sampled in North America now winter farther north than they did previously.... "The birds are an indicator of what's happening," said Greg Butcher, the lead scientist on the study and the National Audubon Society's director of bird conservation. "They are showing us that global warming has been going on for years, and it's having strong biological effects in Indiana and elsewhere."
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[Read more stories about:
canary in coal mine, ecosystem interrelationships, bird collapse, climate impacts]
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Uwe says: "The canaries long ago migrated to the mine floor."
JR says: "Document lost, is there a better link..."
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'Doc Jim says:
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Do those numbers include the migratory patterns of canaries in coal mines?
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