Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow/ice on birds.Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow/ice on birds.Ducks (mostly mallards) at sunrise, in spring pond at temperatures below zero F; mist rising; ice crystals on plumage.Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow/ice on birds.Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow/ice on birds.Ducks (mostly mallards) at sunrise, in spring pond at temperatures below zero F; mist rising; ice crystals on plumage.Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow/ice on birds.Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow on birds.Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow/ice on birds.Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow on birds.Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow on birds.Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow/ice on birds.Mallard hen roosting in snow (Anas platyrhynchos).Flock of mallards (and black ducks) at rest on the water and ice, winter, Great Lakes.Mallard drake on water; winter (Anas platyrhynchos).Ducks (mallards mostly - Anas platyrhynchos) wintering in spring pond; snow on birds. Mallards in Molt