ACKNOWLEDGEMENTS
We thank Peter Arcese, Ben Freeman, and members of Pacific Spirit Lounge
Society at University of British Columbia (UBC) for their thoughtful
feedback on previous versions of the manuscript. We also thank Umesh
Srinivasan for helping locate studies of avian survival throughout the
world. Financial support was provided by UBC to M. N. Scholer and by
through NSERC Discovery Grant F11-05365 to J. E. Jankowski.