The normal waterfowl at the pond are the Canada Geese, who are there almost all the time, and Mallards who visit often. Those we tend to take for granted while unusual visitors are noteworthy, and we tend to haphazardly record the sightings. The haphazard recordings are either on this blog or on scrap pieces of paper placed in one of the bird books we used to verify the species, and are usually diving ducks.
March 3, 2007: Ring-necked ducks
February 17, 2008 to April 26, 2008: Ring-necked ducks
December 26, 2011(and three weeks prior): We believed the single duck was a Lesser Scaup
January, 2012: Ring-necked duck
November 24, 2014 (and 3-4 weeks later): Hooded Merganser
February 29, 2016: Five ducks total, one with a bronze head which appeared to be a Redhead duck. Three of the others appeared to be male Ring-necked ducks, and the fifth was a dull brown color. It was almost certainly a female, but it could have been either a Redhead or a Ring-neck.