1. Department of Biology, University of Richmond, Richmond, VA, USA
2. School of Life Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa
3. Department of Fisheries, Wildlife, and Conservation Biology, University of Minnesota, St. Paul, MN, USA
4. Department of Environmental Sciences, University of Toledo, Toledo, OH, USA
5. Forman’s Branch Bird Observatory, Washington College, Chestertown, MD, USA