pesticides kill on average 72 million birds every year http://www.nytimes.com/2011/01/18/science/18birds.html fraction of the number of birds killed each year Conspiracies Don't Kill Birds, People However Do http://www.nytimes.com/2011/01/18/science/18birds.html Conspiracies Don't Kill Birds, People However Do do the math http://www.nytimes.com/2011/01/18/science/18birds.html http://www.nytimes.com/2011/01/18/science/18birds.html