Goosander

Mergus merganser
These large saw-billed ducks tend to favour fresh water more than Red-breasted Mergansers, but they can also appear in estuaries or sheltered coasts. Males show a white body with a glossy green head, females have a grey body with a rusty-chestnut head. They chase down fish underwater with their serrated bill.
- Habitat: Rivers, lakes, occasionally coastal areas in winter.
- When to See: Most likely in winter.
- Diet / Food: Fish, caught by diving; sometimes small crustaceans or insects.
- Length: 58–72 cm