Acknowledgments
This work was made possible by support from the Wolfson Foundation to
M.S.,
National Geographic to K.R. (WW202R-17) and an NSF CAREER to K.R.
(1942313). This work used the Extreme Science and Engineering Discovery
Environment (XSEDE), which is supported by National Science Foundation
grant ACI-1548562. We also thank the many people who assisted in sample
collection, including the many volunteers and field technicians
associated with The Institute for Bird Populations’ Monitoring Avian
Productivity and Survival (MAPS) and Monitoring Neotropical Migrants in
Winter (MoSI) programs.