Bird Migration Patterns In North America Changing
Forty years of data point to changing bird migration patterns in North America, and the leading suspect is global warming.
An analysis of bird count data gathered by citizens as part of the Audubon Christmas Bird Count shows that most bird species that winter in North America have significantly shifted their migration patterns since 1968.
Scientists say that the shifts by so many species match long-term winter temperature increases, which points to climate change as the cause.
Researchers say that while birds can quickly move to new areas, the plants they depend on migrate much more slowly, which raises a threat to the birds.
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Bird Migration Patterns In North America Changing
Forty years of data point to changing bird migration patterns in North America, and the leading suspect is global warming.
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