Anas platyrhynchos
Ah yes, the beautiful Mallard. I got to watch Don court this fair lady for a short time, she was a looker too. There were about 30 or so more sitting on the ice about 100 feet away just doing nothing so these two snuck off to flirt. (I was discreet.)
Interesting reading on the Mallard at the Cornell site. http://www.birds.cornell.edu/AllAboutBirds/BirdGuide/Mallard.html