Author Affiliations +
Bruce A. Snyder,1 Chad L. Seewagen2,3
1Division of Biology, Kansas State University, Manhattan, KS 66506 USA. E-mail: bruceasnyder@gmail.com
2Department of Ornithology, Wildlife Conservation Society, Bronx, NY 10460 U.S.A. E-mail: . cseewagen@wcs.org
3Department of Biology, University of Western Ontario, London, ON N6A 5B7 Canada.