In the late afternoon I counted birds around the east end of the Mall and then around my apartment. The reflecting pool was mostly frozen with a few open patches, one of which had a small group of gulls, while the other had a few mallards. Over at the Indian Museum, there was a very large flock of mallards (over 30), plus several song sparrows and white-throated sparrows. Oddly enough, I did not see any house sparrows while I was out walking. Usually there are at least a few at the Indian Museum.
Here is the sum of the two checklists I submitted for the Great Backyard Bird Count.
As of the time of this post, 24 species have been reported in DC on 6 checklists. That is not too bad for the first day, though it is not anywhere near the leaders.