- The males are larger then the females.
- The males are a striking black and white, with iridescent green and purple heads with a large white patch behind the eye.
- Females are grey-toned with a small white patch behind the eye and a light underside.
- The bufflehead is a combination or buffalo and head.
- Winter in protected coastal waters.
- They are migratory.
- Buffleheads breed from southern Alaska through the forested areas of western Canada, central Ohio and easter Quebec.
- Prefer to nest near lakes.
- Often Remains with the same mate for years.