Between a front-loaded work schedule this month and the general fun of a Michigan February I haven't been getting out that much. Photo standards are falling on a daily basis...
The scaup had re-accumulated between the piers, joined by this Long-tailed Duck.
Per my interpretation of Pyle, this bird appears to be a first cycle female in formative (first winter) plumage aspect, attained by a partial (pre-formative) body moult that runs from November to March. The fresh scapulars contrast the more worn flight feathers. Pyle depicts all non-juvenile males as having much more sharply pointed scapulars than this bird displays. In a first-cycle female these feathers are gray with whitish edges (this bird) whereas in an adult these feathers are brown with buffier edges. The pre-formative moult has also transitioned the sides and facial pattern to an appearance closer to a winter adult female's.
There's a black scoter sleeping in the next frame as well.