I received a lovely birdwatching kit for Christmas from my sainted mother this year – an Audubon field guide and a pair of binoculars. Today, the weather and light were finally good enough for me to get a proper look through my new binoculars at the little black and white ducks hanging out in the center of the Mystic Estuary. I was able to confirm the exact placement and shape of the white spots on their heads and the pattern of black and white on their bodies. The birds in my photos identified as Buffleheads are, I believe, actually Common Goldeneyes. FYI.
The links connect to All About Birds, a website of the Cornell Lab of Ornithology.