Crappy pictures. It was raining hard and the bird was on the other side of the lagoon. However, all pictures show the very short bill, flat head, and on some it shows that the bill is partly yellow.
bufflehead, bear lake
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.