a survey of north american migratory waterfowl for duck plague (duck virus enteritis) virus.a survey of migratory waterfowl for duck plague (dp) virus was conducted in the mississippi and central flyways during 1982 and in the atlantic and pacific flyways during 1983. cloacal and pharyngeal swabs were collected from 3,169 migratory waterfowl in these four flyways, principally mallards (anas platyrhynchos l.), black ducks (anas rubripes brewster), and pintails (anas acuta l.). in addition 1,033 birds were sampled from areas of recurrent dp outbreaks among nonmigratory and captive waterf ...19846099427
projected influences of changes in weather severity on autumn-winter distributions of dabbling ducks in the mississippi and atlantic flyways during the twenty-first century.projected changes in the relative abundance and timing of autumn-winter migration are assessed for seven dabbling duck species across the mississippi and atlantic flyways for the mid- and late 21st century. species-specific observed relationships are established between cumulative weather severity in autumn-winter and duck population rate of change. dynamically downscaled projections of weather severity are developed using a high-resolution regional climate model, interactively coupled to a one- ...201627959911
avian influenza virus prevalence in migratory waterfowl in the united states, 2007-2009.we analyzed 155,535 samples collected for surveillance of avian influenza viruses (aivs), in the united states from 2007 to 2009, from migratory waterfowl (ducks, geese, and swans). the goal was to elucidate patterns of prevalence by flyway and functional groups to determine targets for future surveillance. apparent prevalence of aiv was highest in the pacific flyway in 2007-2008 (14.2% and 14.1%, respectively), in the mississippi flyway in 2009 (16.8%), and lowest each year in the atlantic flyw ...201425618997
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