Last February I wrote about a pair of interesting puddle ducks I saw in Brooklyn Bridge Park. She was a mallard,Anas platyrhynchos. He was an American black duck, Anas rubripes. She would normally mate with a green-headed male mallard duck. But they appeared to be a couple.
I think I saw the same pair today in the same spot today.
Both genders of mallard have conspicuous white borders on the blue patch of wing feathers called the speculum.
His plumage is subdued compared to the famous green-headed mallards. His speculum does not have a white border. Click on this to see the male mallard in a previous blog. When I came upon the pair today, they were performing courtship displays. She had her neck extended and was lying low in the water. He was swimming around her, pumping his head up and down.
He stepped onto her back briefly, they mated in the water, and then he hopped off. He flapped his wings and raised his body in a splashy post-copulatory display. Then he paddled to the shore to nibble at plants and preen. The female dashed around the pond for about ten minutes of post-copulatory splashing.
When the celebration is over, she may lay eggs, and hatch some hybrid chicks with a combination of mallard and black duck features.