Link between BSE, grassland birds studied

In a study described as a "striking illustration" of the long-distance links between a global trade disruption and impacts in the natural world, two Canadian scientists have connected the dots between the emergence of mad cow disease in Europe in the mid-1980s and a subsequent series of population spikes among grassland birds in southern Saskatchewan, Alberta and Ontario. More :http://www.leaderpost.com/business/European+outbreak+fuelled+surge+Canadian+birds+through+butterfly+effect/4405666/story.html