Every Spring, a pair of mallards (Anas platyrhynchos) visit our yard. They hang out in our yard for several weeks before moving on to where ever they go. They can usually be found at the bottom of the hill in our backyard, where usually there is flowing water. Occasionally, however, they come up the hill, closer to our house.
I took this photo in 2012 when a drake and a hen mallard ambled along the sidewalk between our house and garage.
Two years later, I took this photo of a drake mallard hanging out on the roof of our garage.