There were 5 very small ducks in with the mallards about an hour and a half ago (5:30pm) on Grenadier Pond. Green-winged teal is my best guess (dark caps, white throats, iridescent speculum (it looked blue to me, but they all do, especially in slanting light). Dark legs contrasted particularly with orange legs of mallards.
There were some brown-backed swallows low over the pond in strong north wind, about half a dozen Canada geese practising short flights (in case migration appealed?), and a pair of swans going nowhere. The bushes were full of noisy American goldfinches in brilliant summer plumage. Didn't notice a single red-winged blackbird.