Reynolds, Joel H.
Knutson, Melinda G.
Newman, Ken B.
Silverman, Emily D.
Thompson, William L.
Funding for this research was provided by:
U.S. Fish and Wildlife Service
Article History
Received: 28 November 2015
Accepted: 27 May 2016
First Online: 8 June 2016
Compliance with ethical standards
:
: This manuscript was developed by the authors as a special element of their regular duties as employees of the US Fish and Wildlife Service. The findings and conclusions in this article are those of the author(s) and do not necessarily represent the views of the US Fish and Wildlife Service.