Uncommon Common Merganser
photo of Common Mergansers [m & f] from: en.wikipedia.org
Karen Fung reports on ebirdsNYC:
[Common Merganser] drake, still at the Meer, in the open water west of Dana Discovery Center. Rare for the Park (but not for the region). Seen here on Sunday and reported to NYNYBIRD text alert as well as to eBird; could be the same individual seen on the Reservoir in late January.
PS from Marie: The Harlem Meer is the body of water at 5th Avenue and 110th Street