U.S. bird population cut in half in last 40 yearsQuicklink submitted by Rob Kall Permalink
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|Twenty common birds -- including the northern bobwhite, the field sparrow and the boreal chickadee -- have lost more than half their populations in the past 40 years, according to the Audobon's society's research. "The focus isn't really on what's happening to these 20 birds, but what's happening to their environment," said Greg Butcher, the societ More...|
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