I saw this brood of ducklings near the Drumheller Fountain at UW Seattle. There was also a few full grown mallards. I assume that the pictured female is the mother, as the ducklings seemed to be following her.

A male and female mallard taking a swim near the coast of the Union Bay Natural area at the University of Washington. As observed from a nearby trail the female duck also began to dive for food in the water as the male mallard casually floated in the water doing nothing on this marvelous, sunny day.

A male and a female mallard. The male displaying the typical color patterns, with a bright green head followed by a black neck, a sort of brown-white integrated body, and a deep blue tail feather area. The female is smaller, with a more bland body color, mostly browns and whites. The female was fishing while the male just floated next to it.

Landed right next to us on a very small island on Lake Washington. Initially heard the characteristic heron squawk, and with its long neck and long reddish-brown legs, being a sort of grey-blue color. Quickly flew off after I took the picture.