bufflehead
/ˈbʌfəlˌhɛd/
noun
- A small North American duck with a large head and a short bill; the male has a white patch on the back of its head.
- Buffleheads nest in tree cavities near water.
- We spotted a bufflehead diving for fish in the lake.
- The male bufflehead has striking black-and-white plumage.