1. Department of Biology, Wake Forest University, Winston-Salem, NC 27109, USA
2. Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA
3. Cornell Lab of Ornithology, Ithaca, NY 14850, USA
4. Department of Biology, University of St. Thomas, St. Paul, MN 55105, USA
5. Department of Biology, Trinity University, San Antonio, TX 78212, USA
6. Department of Global Health, University of South Florida, Tampa, FL 33620, USA
7. Department of Zoology, Oklahoma State University, Stillwater, OK 74078, USA