Posted AT 4:27 AM EST on 23/09/08
Black clouds on the horizon for birds of the world
There has been a precipitous decline of more than 50 per cent in the populations of 20 of the most common North American birds over the past four decades, alarming conservationists, who say the trend is an indicator of a serious deterioration in the environment.
The figures were in the State of the World's Birds, a report released yesterday and posted on a related website. Canadian and U.S.
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