An undated photo shows a snowy owl in Montana. North American skies have grown quieter over the last decades by the absent song of 1.5 billion birds, according to the latest summary of bird populations. THE CANADIAN PRESS/AP Photo/The Missoulian,Michael Gallacher
By Bob Weber, The Canadian Press
US windfarms kill 10-20 times more than previously thought
North American skies have grown quieter over the last decades by the absent songs of 1.5 billion birds, says the latest summary of bird populations.
The survey by dozens of government, university and environmental agencies across North America has also listed 86 species of birds — including once-common and much-loved songbirds such as the evening grosbeak and Canada warbler — that are threatened by plummeting populations, habitat destruction and climate change...http://www.mykawartha.com/news-story/6857037-1-5-billion-fewer-birds-in-the-skies-report/