OK, so the first two are not ducks. I photographed these on December 31, 2016 at the Pond at the south end of Central Park. I added some effects in Photoshop and OnOne.

Downy on Downed Log, Centraql Park 12/31/2016

Yellow-bellied Sapsucker, Central Park 12/31/2016

Pintail, Central Park 12/31/2016

The Mallards are in mating mode. They splashed around and chased each other making a ruckus.

Mallards, Central Park 12/31/2016

Mallards, Central Park 12/31/2016

Mallards, Central Park 12/31/2016

Mallards, Central Park 12/31/2016

Mallards, Central Park 12/31/2016

Mallards, Central Park 12/31/2016