Don Edwards San Francisco Bay National Wildlife Refuge

The Snow Goose (Chen caerulescens), also known as the Blue Goose, is a North American species of goose. Its name derives from the typically white plumage. The genus of this bird is disputed. The American Ornithologists' Union and BirdLife International place this species and the other "white geese" in the Chen genus, while other authorities follow the traditional treatment of placing these species in the "gray goose" genus Anser. less ↑

A tiny white goose with black wingtips, the Ross's Goose is like a miniature version of the more abundant Snow Goose. It breeds in the central Arctic and winters primarily in central California, but it is becoming more frequent farther east. Downy young come in two colors: yellow and gray. The two forms look identical once they get real feathers. Very rarely a Ross's Goose can be found that is dark-colored like a blue morph Snow Goose less ↑