Thomas, Daniel B. http://orcid.org/0000-0001-7679-0991
McGraw, Kevin J.
Funding for this research was provided by:
National Museum of Natural History, Smithsonian Institution
Article History
Received: 24 June 2017
Revised: 26 March 2018
Accepted: 10 April 2018
First Online: 21 April 2018
Compliance with ethical standards
:
: All analyses were on feathers from deceased birds that had not been specifically killed for this study. Analyses were performed in, and adhered to the laws of, the United States of America.
: The authors declare that they have no conflict of interest.