Suggested citation and version history for Uyehara, Kimberly J., Engilis, Andrew, Jr., and Reynolds, Michelle, 2007, Hawaiian Duck's future threatened by feral mallards: U.S. Geological Survey Fact Sheet 2007-3047 [http://pubs.usgs.gov/fs/2007/3047/]. Version 1.0, July 2, 2007 Initial release online at http://pubs.usgs.gov/fs/2007/3047/