1. Departmentof Natural Resources, Cornell University , Ithaca, New York , USA
2. Cornell Lab of Ornithology, Cornell University , Ithaca, New York , USA
3. Hawkesbury Institute for the Environment, Western Sydney University , Hawkesbury Campus, Penrith, New South Wales , Australia
4. Department of Environment and Genetics, La Trobe University , Bundoora, Victoria , Australia
5. Department of Neurobiology and Behavior, Cornell University , Ithaca, New York , USA
6. Centre for Sustainable Ecosystem Solutions, School of Earth, Atmospheric and Life Sciences, University of Wollongong , Wollongong , Australia