 
      Fowl Obsession
    
              October 19, 2011 — 
            Tallying species started in the 1900s with the Christmas Bird Count, but it was Roger Tory Peterson who turned birding North America into a sport. 
    
          
       
      Mark Obmascik is a Pulitzer Prize–winning journalist and obsessed birder who lives in Colorado with his wife and three sons.
 
       
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