...that I can't add to my ABA list.
This evening after work, Pamela and I took a quick trip to Newton, MA where a Common/Eurasian Teal has been seen since this past Sunday. Apparently, it is considered a subspecies or "form" of Green-winged Teal. (There is an American and a Eurasian form)
A little more about Green-winged Teal, and photos of the American form can be seen at Cornell Lab's All About Birds site.
The bird that we saw today looks different from the American form in that it has a white horizontal stripe along the upper wing, instead of a vertical white stripe at the front edge of the wing.