I haven't seen but a handful of mallards. I wouldn't expect them to start showing up in any numbers until we have some snow cover up north and at least one good North wind blow in.
"A man may not care for golf and still be human, but the man who does not like to see, hunt, photograph or otherwise outwit birds or animals is hardly normal. He is supercivilized, and I for one do not know how to deal with him." Aldo Leopold