female with hooded mergansers
Common Goldeneye (Bucephala clangula), male, Shoreline Lake, Santa Clara County, California - November 2009.
Barrow's Goldeneye (Bucephala islandica), male, Rodeo Lagoon, Marin County, California - 22 November 2012. Linked to eBird checklist.
Bufflehead (Bucephala albeola), adult male, Heron's Head Park, San Francisco, California - 10 November 2014.
Goldeneye and Whistler are common names for a species of small tree-hole nesting northern hemisphere seaducks belonging to the genus Bucephala. The plumage is black and white. Goldeneyes eat fish, crustaceans and other marine life. The "Whistler" name comes from the noise their beating wings make in flight.