Jeffrey R. Walters,^1,* Steven R. Beissinger,² John W. Fitzpatrick,³ Russell Greenberg,⁴ James D. Nichols,⁵ H. Ronald Pulliam,⁶ David W. Winkler<sup>7

1</sup>aDepartment of Biology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24
²bDepartment of Environmental Science, Policy and Management, 151 Hilgard Hall 3110, University of Ca
³cCornell Laboratory of Ornithology, 159 Sapsucker Woods Road, Ithaca, New York 14850, USA
⁴dSmithsonian Migratory Bird Center, National Zoological Park, Smithsonian Institution, Washington, D
⁵eU.S. Geological Survey, Biological Resources Division, Patuxent Wildlife Research Center, Laurel, M
⁶fInstitute of Ecology, University of Georgia, Athens, Georgia 30605, USA
⁷gDepartment of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York 14853, USA

^*jrwalt@vt.edu