THE GLOBE AND MAIL | The loss of three billion birds in North America is the canary in the coal mine

Published: 30 September 2019

David M. Bird is an emeritus professor of wildlife biology at McGill University who has studied birds for five decades. "When I read the recent headlines that North America has lost nearly three billion birds over just the past five decades, I was not surprised. But I must admit it did depress me to a degree. That’s a lot of birds!"

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