Institution: | 1. Cornell Lab of Ornithology, Cornell University, Ithaca, NY 14850, USA;2. Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA;3. Ecology, Evolution, and Conservation Biology Graduate Program, University of Nevada, Reno, NV 89557, USA;4. Ecology and Evolutionary Biology, University of Oklahoma, Norman, OK 73019, USA |