ACKNOWLEDGMENTS
We would like to acknowledge Laura Hurley, Callum McDiarmid, Mikaela Symes, Fabio Musanni, and Stephan Leu. We are grateful to the Macquarie Animal Research Services (M.A.R.S.) staff for their invaluable contribution in caring for the birds. This research was funded by an Australian Research Council grant (DP170103619) and by an Endeavour Australian Fellowship.