I was at the dam a little later in the morning. Didn't see the scoter, but one of the eagles did a low flyover. For a moment, I thought it was going to land on the roof of the Tufts boathouse! Sometime around 9:45, I also saw what looked like a young eagle circling high over the western shore of the upper lake. The head was mostly dark and the plumage was mottled, so I'm guessing one or two years old? If the resident eagles were still around, they didn't feel the need to see the youngster off. It flew off to the west.
Best wishes,
Nina Shepardson, Arlington