This video from the USA is called Grassland Bird Talk.
From Wildlife Extra:
New study finds pesticides leading cause of grassland bird declines
February 2013. A new study led by a preeminent Canadian toxicologist identifies acutely toxic pesticides as the most likely leading cause of the widespread decline in grassland bird numbers in the United States, a finding that challenges the widely-held assumption that loss of habitat is the primary cause of those population declines.
The scientific assessment, which looked at data over a 23-year period – from 1980 to 2003, was conducted by Dr. Pierre Mineau, recently retired from Environment Canada, and Mélanie Whiteside of Health Canada.
The study looked at five potential causes of grassland bird declines besides lethal pesticide risk: change in cropped pasture such as hay or alfalfa production, farming intensity or the proportion of…
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