Preliminary methodology to assess the national and regional impact of U.S. wind energy development on birds and bats - Diffendorfer, James E.; Beston, Julie; Merrill, Matthew D.; Stanton, Jessica; Corum, M.D.; Loss, Scott R.; Thogmartin, Wayne; Johnson, Douglas; Erickson, Richard; Heist, Kevin (Scientific Investigations Report, 2015)