2007 draft recovery plan for the northern spotted owl (Strix occidentalis caurina) : merged options 1 and 2 / Draft recovery plan for the northern spotted owl (Strix occidentalis caurina) U.S. Fish and Wildlife Service. Northern spotted owl Wildlife recovery 333 REG 2007 A078 Or. "April 2007." Portland, Or. : The Region , [2007] [2007] Text xiii, 170 p. : http://www.loc.gov/catdir/toc/fy0715/2007395602.html