Anas obscura rubripes
New Hampshire shore of Lake Umbagog, USA.
Thought to be closest to A. undulata, A. melleri and A. platyrhynchos. Sometimes considered a subspecies of A. platyrhynchos, with which it frequently interbreeds in the wild. Recent analyses of present species and A. platyrhynchos failed to identify two distinct taxa, this due to horizontal gene flow, homoplasy, or shared ancestry; genetic differentiation between the two taxa had decreased significantly, from 0.146 for individuals living before 1940 to 0.008 for those taken in 1998, producing a breakdown in species integrity probably as a result of hybridization#R. Monotypic.
Breeds in C & E Canada from Manitoba to Newfoundland, S to E USA from Minnesota to Delaware and along coast S to North Carolina; outside main range breeds locally and irregularly in S Saskatchewan, SW British Columbia, NW Washington, the Dakotas, Kansas, Georgia and N Florida. In winter S to Gulf Coast and N half of Florida.
Food and feeding
Status and conservation
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