The article discusses the decline of Common Loons in Canada, citing data from the Canadian Lakes Loon Survey. It highlights the impacts of several perceived threats to loon productivity, including shoreline development and boats, early spring temperatures, eagles and cormorants, acid rain, mercury, and climate change. The article suggests that a combination of these factors is affecting loon productivity and proposes ways to reverse the trend, such as creating or enhancing shoreline buffers, leaving overhanging vegetation, and being careful boaters.