Snow geese, like their name implies, are white except for black stripes on the underside of their outstretched wings. Swans Swans are large, uncommon birds who occasionally stop over in local wetlands for the winter. In Northern California, the tundra swan is the most common visitor. They have long, graceful necks and contrasting black bills and feet. Their bright white feathers contrast dramatically against the tawny backdrop of marshes.
Ducks There are many varieties of duck.
There are carnivorous ducks and herbivorous ducks. There are large ducks, the size of a raven, and small ducks, the size of a robin. Ducks are divided into distinct groups. Dabblers Dabblers are often seen bottoms-up as they pick aquatic plants below the water's surface. But up close, these birds have magnificent coloration.