Wood Ducks.
And Hooded Mergansers on the Sylvan Water, largest of water bodies in Green-Wood. The Hoodies, nobodies’ fools, were not approaching anyone on the shore, unlike the shameless Mallards.
Mallards are, by the way, some of our largest wild ducks.
Bonus freaks of nature… Actually, it’s the aeration devices that keep these very round holes open in the ice.
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This work by Matthew Wills is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.
Backyard and Beyond 
I guess NYC ducks are a bit more domesticated than the ones I have in the rural Ozarks. I would love to get close enuf to the ones I see to get photos like yours, but I think they are too wild; they fly away when I’m across the lake.
Anyway, thanks for the consistently great images and thoughts!