What Does that a Mallard Look Like?
Mallard ducks at UCDavis in the parking lot!
Photo by Lois Richter.
Mallards are very common ducks. Many are tame, populate parks and other human habitations, and inter-breed with other tame ducks. (Many "puddle ducks" are mallard-x-something hybrids.)
Wild mallards migrate; tame mallards usually don't.